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Article: Punzi-loss:: a non-differentiable metric approximation for sensitivity optimisation in the search for new particles.

Abudinén, F / Bertemes, M / Bilokin, S / Campajola, M / Casarosa, G / Cunliffe, S / Corona, L / De Nuccio, M / De Pietro, G / Dey, S / Eliachevitch, M / Feichtinger, P / Ferber, T / Gemmler, J / Goldenzweig, P / Gottmann, A / Graziani, E / Haigh, H / Hohmann, M /

Humair, T / Inguglia, G / Kahn, J / Keck, T / Komarov, I / Krohn, J-F / Kuhr, T / Lacaprara, S / Lieret, K / Maiti, R / Martini, A / Meier, F / Metzner, F / Milesi, M / Park, S-H / Prim, M / Pulvermacher, C / Ritter, M / Sato, Y / Schwanda, C / Sutcliffe, W / Tamponi, U / Tenchini, F / Urquijo, P / Zani, L / Žlebčík, R / Zupanc, A

The European physical journal. C, Particles and fields

2022 Volume 82, Issue 2, Page(s) 121

Abstract: We present the novel implementation of a non-differentiable metric approximation and a corresponding loss-scheduling aimed at the search for new particles of unknown mass in high energy physics experiments. We call the loss-scheduling, based on the ... ...

Abstract	We present the novel implementation of a non-differentiable metric approximation and a corresponding loss-scheduling aimed at the search for new particles of unknown mass in high energy physics experiments. We call the loss-scheduling, based on the minimisation of a figure-of-merit related function typical of particle physics, a Punzi-loss function, and the neural network that utilises this loss function a Punzi-net. We show that the Punzi-net outperforms standard multivariate analysis techniques and generalises well to mass hypotheses for which it was not trained. This is achieved by training a single classifier that provides a coherent and optimal classification of all signal hypotheses over the whole search space. Our result constitutes a complementary approach to fully differentiable analyses in particle physics. We implemented this work using PyTorch and provide users full access to a public repository containing all the codes and a training example.
Language	English
Publishing date	2022-02-08
Publishing country	France
Document type	Journal Article
ZDB-ID	1459069-4
ISSN	1434-6052 ; 1434-6044
ISSN (online)	1434-6052
ISSN	1434-6044
DOI	10.1140/epjc/s10052-022-10070-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for Lepton-Flavor-Violating τ Decays to a Lepton and an Invisible Boson at Belle II.

Adachi, I / Adamczyk, K / Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Aushev, T / Aushev, V / Bae, H / Bahinipati, S / Bambade, P / Banerjee, Sw / Baudot, J / Bauer, M / Baur, A / Beaubien, A /

Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhuyan, B / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bodrov, D / Bolz, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Chen, Y Q / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cunliffe, S / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Flood, K / Fodor, A / Forti, F / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Gudkova, K / Guilliams, J / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Joo, K K / Junkerkalefeld, H / Kakuno, H / Kaliyar, A B / Kandra, J / Kang, K H / Kang, S / Karl, R / Karyan, G / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, R / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Leboucher, R / Le Diberder, F R / Leitl, P / Lewis, P M / Li, C / Li, L K / Li, Y B / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Luo, T / Lyu, C / Maggiora, M / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Manthei, A / Marcello, S / Marinas, C / Martel, L / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakayama, H / Nakazawa, Y / Narimani Charan, A / Naruki, M / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Niebuhr, C / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, H / Park, S-H / Paschen, B / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Pham, F / Piccolo, M / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shen, C P / Shi, X D / Shillington, T / Shiu, J-G / Shwartz, B / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sue, Y / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takizawa, M / Tamponi, U / Tanida, K / Tanigawa, H / Tenchini, F / Thaller, A / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Vobbilisetti, V / Wakeling, H M / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Wiechczynski, J / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yook, Y M / Yoshihara, K / Yuan, C Z / Yusa, Y / Zani, L / Zhang, Y / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 130, Issue 18, Page(s) 181803

Abstract: We search for lepton-flavor-violating τ^{-}→e^{-}α and τ^{-}→μ^{-}α decays, where α is an invisible spin-0 boson. The search uses electron-positron collisions at 10.58 GeV center-of-mass energy with an integrated luminosity of 62.8 fb^{-1}, produced by ... ...

Abstract	We search for lepton-flavor-violating τ^{-}→e^{-}α and τ^{-}→μ^{-}α decays, where α is an invisible spin-0 boson. The search uses electron-positron collisions at 10.58 GeV center-of-mass energy with an integrated luminosity of 62.8 fb^{-1}, produced by the SuperKEKB collider and collected with the Belle II detector. We search for an excess in the lepton-energy spectrum of the known τ^{-}→e^{-}ν[over ¯]_{e}ν_{τ} and τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decays. We report 95% confidence-level upper limits on the branching-fraction ratio B(τ^{-}→e^{-}α)/B(τ^{-}→e^{-}ν[over ¯]_{e}ν_{τ}) in the range (1.1-9.7)×10^{-3} and on B(τ^{-}→μ^{-}α)/B(τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ}) in the range (0.7-12.2)×10^{-3} for α masses between 0 and 1.6 GeV/c^{2}. These results provide the most stringent bounds on invisible boson production from τ decays.
Language	English
Publishing date	2023-03-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.130.181803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Test of Light-Lepton Universality in the Rates of Inclusive Semileptonic B-Meson Decays at Belle II.

Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Bae, H / Bahinipati, S / Bambade, P / Banerjee, Sw / Bansal, S / Barrett, M / Baudot, J / Bauer, M / Baur, A /

Beaubien, A / Becker, J / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bhuyan, B / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bodrov, D / Borah, J / Bozek, A / Bračko, M / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Cerasoli, J / Chang, M-C / Cheaib, R / Cheema, P / Chekelian, V / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cochran, J / Corona, L / Cunliffe, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dhamija, R / Di Capua, F / Dingfelder, J / Doležal, Z / Dong, T V / Dorigo, M / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finocchiaro, G / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Gaudino, G / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Gradl, W / Grammatico, T / Granderath, S / Graziani, E / Gruberová, Z / Gu, T / Gudkova, K / Halder, S / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hohmann, M / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jacobs, W W / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Junkerkalefeld, H / Kaleta, M / Kaliyar, A B / Karyan, G / Kawasaki, T / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kinoshita, K / Kodyš, P / Kohani, S / Kojima, K / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Križan, P / Krokovny, P / Kumar, J / Kumar, R / Kumara, K / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lange, J S / Laurenza, M / Leboucher, R / Le Diberder, F R / Levit, D / Lewis, P M / Li, L K / Libby, J / Liptak, Z / Liu, Q Y / Liu, Z Q / Liventsev, D / Longo, S / Lueck, T / Lyu, C / Ma, Y / Maggiora, M / Maharana, S P / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Manthei, A C / Mantovano, M / Marinas, C / Martel, L / Martellini, C / Martini, A / Massaccesi, L / Masuda, M / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Moneta, S / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakazawa, Y / Narimani Charan, A / Naruki, M / Narwal, D / Natochii, A / Nayak, L / Nazaryan, G / Nisar, N K / Nishida, S / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Pardi, S / Park, H / Park, J / Paschen, B / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Reif, M / Reiter, S / Ripp-Baudot, I / Rizzo, G / Rizzuto, L B / Rocchetti, P / Roney, J M / Rostomyan, A / Rout, N / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Scavino, B / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Sevior, M E / Sfienti, C / Shan, W / Sharma, C / Shen, C P / Shillington, T / Shiu, J-G / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stroili, R / Sue, Y / Sumihama, M / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takizawa, M / Tamponi, U / Tanida, K / Taniguchi, N / Tenchini, F / Tiwary, R / Tonelli, D / Torassa, E / Trabelsi, K / Tsaklidis, I / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vismaya, V S / Vitale, L / Vossen, A / Wallner, S / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yin, J H / Yook, Y M / Yoshihara, K / Zhai, Y / Zhang, Y / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 131, Issue 5, Page(s) 51804

Abstract: We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb^{-1} from electron-positron ... ...

Abstract	We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189 fb^{-1} from electron-positron collisions collected with the Belle II detector. In events where the partner B meson is fully reconstructed, we use fits to the lepton momentum spectra above 1.3 GeV/c to obtain R(X_{e/μ})=1.007±0.009(stat)±0.019(syst), which is the most precise lepton-universality test of its kind and agrees with the standard-model expectation.
Language	English
Publishing date	2023-08-18
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.051804
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for a τ^{+}τ^{-} Resonance in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} Events with the Belle II Experiment.

Adachi, I / Adamczyk, K / Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, T / Aushev, V / Aversano, M / Babu, V / Bae, H / Bahinipati, S / Bambade, P / Banerjee, Sw / Bansal, S /

Barrett, M / Baudot, J / Bauer, M / Baur, A / Beaubien, A / Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertacchi, V / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bhuyan, B / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bobrov, A / Bodrov, D / Bolz, A / Borah, J / Bozek, A / Bračko, M / Branchini, P / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Cerasoli, J / Chang, M-C / Chang, P / Cheaib, R / Cheema, P / Chekelian, V / Chen, Y Q / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Cochran, J / Corona, L / Cremaldi, L M / Cunliffe, S / Czank, T / Das, S / Dattola, F / De La Cruz-Burelo, E / De La Motte, S A / de Marino, G / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Dhamija, R / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dreyer, S / Dubey, S / Dujany, G / Ecker, P / Eliachevitch, M / Epifanov, D / Feichtinger, P / Ferber, T / Ferlewicz, D / Fillinger, T / Finck, C / Finocchiaro, G / Fodor, A / Forti, F / Frey, A / Fulsom, B G / Gabrielli, A / Ganiev, E / Garcia-Hernandez, M / Garmash, A / Gaudino, G / Gaur, V / Gaz, A / Gellrich, A / Ghevondyan, G / Ghosh, D / Ghumaryan, H / Giakoustidis, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Gogota, O / Goldenzweig, P / Gradl, W / Grammatico, T / Granderath, S / Graziani, E / Greenwald, D / Gruberová, Z / Gu, T / Guan, Y / Gudkova, K / Guilliams, J / Halder, S / Han, Y / Hara, T / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hirata, H / Hoek, M / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ipsita, N / Ishikawa, A / Ito, S / Itoh, R / Iwasaki, M / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Ji, Q P / Jia, S / Jin, Y / Johnson, A / Joo, K K / Junkerkalefeld, H / Kakuno, H / Kaleta, M / Kalita, D / Kaliyar, A B / Kandra, J / Kang, K H / Kang, S / Karl, R / Karyan, G / Kawasaki, T / Keil, F / Ketter, C / Kiesling, C / Kim, C-H / Kim, D Y / Kim, K-H / Kim, Y-K / Kindo, H / Kodyš, P / Koga, T / Kohani, S / Kojima, K / Konno, T / Korobov, A / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumar, R / Kumara, K / Kunigo, T / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lai, Y-T / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Leboucher, R / Le Diberder, F R / Leitl, P / Levit, D / Lewis, P M / Li, C / Li, L K / Li, Y B / Libby, J / Lieret, K / Liu, Q Y / Liu, Z Q / Liventsev, D / Longo, S / Lozar, A / Lueck, T / Lyu, C / Ma, Y / Maggiora, M / Maharana, S P / Maiti, R / Maity, S / Manfredi, R / Manoni, E / Manthei, A C / Mantovano, M / Marcantonio, D / Marcello, S / Marinas, C / Martel, L / Martellini, C / Martini, A / Martinov, T / Massaccesi, L / Masuda, M / Matsuda, T / Matsuoka, K / Matvienko, D / Maurya, S K / McKenna, J A / Mehta, R / Merola, M / Metzner, F / Milesi, M / Miller, C / Mirra, M / Miyabayashi, K / Miyake, H / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Mondal, S / Moneta, S / Moser, H-G / Mrvar, M / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakayama, H / Nakazawa, H / Nakazawa, Y / Narimani Charan, A / Naruki, M / Narwal, D / Natkaniec, Z / Natochii, A / Nayak, L / Nayak, M / Nazaryan, G / Niebuhr, C / Nisar, N K / Nishida, S / Ogawa, S / Ono, H / Onuki, Y / Oskin, P / Otani, F / Pakhlov, P / Pakhlova, G / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Parham, K / Park, J / Park, S-H / Paschen, B / Passeri, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Pham, F / Piccolo, M / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, L / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purwar, H / Rad, N / Rados, P / Raeuber, G / Raiz, S / Ramirez Morales, A / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Rizzuto, L B / Robertson, S H / Rodríguez Pérez, D / Roehrken, M / Roney, J M / Rostomyan, A / Rout, N / Russo, G / Sahoo, D / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schnepf, M / Schueler, J / Schwanda, C / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shan, W / Sharma, C / Shen, C P / Shi, X D / Shillington, T / Shiu, J-G / Shtol, D / Shwartz, B / Sibidanov, A / Simon, F / Singh, J B / Skorupa, J / Sobie, R J / Sobotzik, M / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stavroulakis, P / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sue, Y / Sumihama, M / Sumisawa, K / Sutcliffe, W / Suzuki, S Y / Svidras, H / Takahashi, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Tenchini, F / Thaller, A / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Tsaklidis, I / Uchida, M / Ueda, I / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vismaya, V S / Vitale, L / Vobbilisetti, V / Volpe, R / Vossen, A / Wach, B / Wakai, M / Wakeling, H M / Wallner, S / Wang, E / Wang, M-Z / Wang, X L / Wang, Z / Warburton, A / Watanabe, M / Watanuki, S / Welsch, M / Wessel, C / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yook, Y M / Yoshihara, K / Yuan, C Z / Yusa, Y / Zani, L / Zhai, Y / Zhang, Y / Zhilich, V / Zhou, J S / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2023 Volume 131, Issue 12, Page(s) 121802

Abstract: We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10 GeV/c^{2} mass range. We use a 62.8 fb^{-1} sample of e^{+}e^{-} collisions collected at a center-of-mass energy ... ...

Abstract	We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10 GeV/c^{2} mass range. We use a 62.8 fb^{-1} sample of e^{+}e^{-} collisions collected at a center-of-mass energy of 10.58 GeV by the Belle II experiment at the SuperKEKB collider. The analysis probes three different models predicting a spin-1 particle coupling only to the heavier lepton families, a Higgs-like spin-0 particle that couples preferentially to charged leptons (leptophilic scalar), and an axionlike particle, respectively. We observe no evidence for a signal and set exclusion limits at 90% confidence level on the product of cross section and branching fraction into τ pairs, ranging from 0.7 to 24 fb, and on the couplings of these processes. We obtain world-leading constraints on the couplings for the leptophilic scalar model for masses above 6.5 GeV/c^{2} and for the axionlike particle model over the entire mass range.
Language	English
Publishing date	2023-10-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.131.121802
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Precise Measurement of the D^{0} and D^{+} Lifetimes at Belle II.

Abudinén, F / Adachi, I / Adamczyk, K / Aggarwal, L / Ahmed, H / Aihara, H / Akopov, N / Aloisio, A / Anh Ky, N / Asner, D M / Atmacan, H / Aushev, V / Babu, V / Bacher, S / Bae, H / Baehr, S / Bahinipati, S / Bambade, P / Banerjee, Sw /

Bansal, S / Barrett, M / Baudot, J / Bauer, M / Baur, A / Becker, J / Behera, P K / Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bertholet, E / Bessner, M / Bettarini, S / Bhardwaj, V / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bobrov, A / Bodrov, D / Bolz, A / Bozek, A / Bračko, M / Branchini, P / Braun, N / Briere, R A / Browder, T E / Budano, A / Bussino, S / Campajola, M / Cao, L / Casarosa, G / Cecchi, C / Červenkov, D / Chang, M-C / Chang, P / Cheaib, R / Chekelian, V / Chen, C / Chen, Y-T / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Choudhury, S / Cinabro, D / Corona, L / Cremaldi, L M / Cunliffe, S / Czank, T / Dattola, F / De La Cruz-Burelo, E / de Marino, G / De Nardo, G / De Pietro, G / de Sangro, R / Destefanis, M / Dey, S / De Yta-Hernandez, A / Di Canto, A / Di Capua, F / Dingfelder, J / Doležal, Z / Domínguez Jiménez, I / Dong, T V / Dorigo, M / Dort, K / Dossett, D / Dubey, S / Duell, S / Dujany, G / Ecker, P / Epifanov, D / Ferber, T / Ferlewicz, D / Finocchiaro, G / Flood, K / Fodor, A / Forti, F / Fulsom, B G / Gabrielli, A / Gabyshev, N / Gaz, A / Gellrich, A / Giakoustidis, G / Giordano, R / Giri, A / Glazov, A / Gobbo, B / Godang, R / Goldenzweig, P / Golob, B / Gradl, W / Graziani, E / Greenwald, D / Gu, T / Guan, Y / Gudkova, K / Guilliams, J / Hadjivasiliou, C / Halder, S / Hara, K / Hara, T / Hartbrich, O / Hayasaka, K / Hayashii, H / Hazra, S / Hearty, C / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hirata, H / Hoek, M / Hohmann, M / Hsu, C-L / Humair, T / Iijima, T / Inami, K / Inguglia, G / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jaffe, D E / Jang, E-J / Jia, S / Jin, Y / Junkerkalefeld, H / Kakuno, H / Kaliyar, A B / Kandra, J / Kang, K H / Karl, R / Karyan, G / Kato, Y / Kawasaki, T / Kiesling, C / Kim, C-H / Kim, D Y / Kim, Y-K / Kim, Y / Kimmel, T D / Kinoshita, K / Kodyš, P / Koga, T / Kohani, S / Konno, T / Korpar, S / Kovalenko, E / Kowalewski, R / Kraetzschmar, T M G / Krinner, F / Križan, P / Krokovny, P / Kuhr, T / Kumar, J / Kumar, M / Kumar, R / Kumara, K / Kurz, S / Kuzmin, A / Kwon, Y-J / Lacaprara, S / Lalwani, K / Lam, T / Lanceri, L / Lange, J S / Laurenza, M / Lautenbach, K / Le Diberder, F R / Lee, S C / Leitl, P / Levit, D / Li, C / Li, L K / Libby, J / Lieret, K / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Lueck, T / Lyu, C / Manfredi, R / Manoni, E / Marinas, C / Martini, A / Matsuda, T / Matsuoka, K / Matvienko, D / McKenna, J A / Meier, F / Merola, M / Metzner, F / Miller, C / Miyabayashi, K / Mizuk, R / Mohanty, G B / Molina-Gonzalez, N / Moon, H / Moser, H-G / Mrvar, M / Murphy, C / Mussa, R / Nakamura, I / Nakamura, K R / Nakao, M / Nakazawa, H / Natkaniec, Z / Natochii, A / Nazaryan, G / Niebuhr, C / Niiyama, M / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, S / Onishchuk, Y / Ono, H / Onuki, Y / Oskin, P / Oxford, E R / Ozaki, H / Pakhlov, P / Paladino, A / Pang, T / Panta, A / Paoloni, E / Pardi, S / Park, H / Park, S-H / Paschen, B / Passeri, A / Pathak, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Pestotnik, R / Pham, F / Piccolo, M / Piilonen, L E / Pinna Angioni, G / Podesta-Lerma, P L M / Podobnik, T / Pokharel, S / Polat, G / Popov, V / Praz, C / Prell, S / Prencipe, E / Prim, M T / Purohit, M V / Purwar, H / Rad, N / Rados, P / Raiz, S / Reiter, S / Remnev, M / Ripp-Baudot, I / Rizzo, G / Rizzuto, L B / Robertson, S H / Roney, J M / Rostomyan, A / Rout, N / Rozanska, M / Sahoo, D / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schueler, J / Schwanda, C / Schwartz, A J / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sfienti, C / Shiu, J-G / Shwartz, B / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Sokolov, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sumihama, M / Sutcliffe, W / Suzuki, S Y / Svidras, H / Tabata, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Taniguchi, N / Tenchini, F / Tiwary, R / Tonelli, D / Torassa, E / Toutounji, N / Trabelsi, K / Tsuboyama, T / Ueda, I / Uehara, S / Uematsu, Y / Uglov, T / Unger, K / Unno, Y / Uno, K / Uno, S / Urquijo, P / Ushiroda, Y / Usov, Y V / Vahsen, S E / van Tonder, R / Varner, G S / Vinokurova, A / Vitale, L / Vossen, A / Waheed, E / Wakeling, H M / Wang, E / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Welsch, M / Wessel, C / Wiechczynski, J / Won, E / Xu, X P / Yabsley, B D / Yamada, S / Yan, W / Yang, S B / Ye, H / Yelton, J / Yin, J H / Yoshihara, K / Yusa, Y / Zani, L / Zhilich, V / Zhou, Q D / Zhou, X Y / Zhukova, V I / Žlebčík, R

Physical review letters

2021 Volume 127, Issue 21, Page(s) 211801

Abstract: We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The ... ...

Abstract	We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb^{-1}. The results, τ(D^{0})=410.5±1.1(stat)±0.8(syst) fs and τ(D^{+})=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.
Language	English
Publishing date	2021-12-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.127.211801
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for Axionlike Particles Produced in e^{+}e^{-} Collisions at Belle II.

Abudinén, F / Adachi, I / Aihara, H / Akopov, N / Aloisio, A / Ameli, F / Anh Ky, N / Asner, D M / Aushev, T / Aushev, V / Babu, V / Baehr, S / Bahinipati, S / Bambade, P / Banerjee, Sw / Bansal, S / Baudot, J / Becker, J / Behera, P K /

Bennett, J V / Bernieri, E / Bernlochner, F U / Bertemes, M / Bessner, M / Bettarini, S / Bhardwaj, V / Bianchi, F / Bilka, T / Bilokin, S / Biswas, D / Bračko, M / Branchini, P / Braun, N / Browder, T E / Budano, A / Bussino, S / Campajola, M / Casarosa, G / Cecchi, C / Červenkov, D / Chang, M-C / Chang, P / Cheaib, R / Chekelian, V / Cheon, B G / Chilikin, K / Chirapatpimol, K / Cho, H-E / Cho, K / Cho, S-J / Choi, S-K / Cinabro, D / Corona, L / Cremaldi, L M / Cunliffe, S / Dash, N / Dattola, F / De La Cruz-Burelo, E / De Nardo, G / De Nuccio, M / De Pietro, G / de Sangro, R / Destefanis, M / De Yta-Hernandez, A / Di Capua, F / Doležal, Z / Dong, T V / Dort, K / Dossett, D / Dujany, G / Eidelman, S / Ferber, T / Ferlewicz, D / Fiore, S / Fodor, A / Forti, F / Fulsom, B G / Ganiev, E / Garg, R / Garmash, A / Gaur, V / Gaz, A / Gebauer, U / Gellrich, A / Geßler, T / Giordano, R / Giri, A / Gobbo, B / Godang, R / Goldenzweig, P / Golob, B / Gomis, P / Gradl, W / Graziani, E / Greenwald, D / Hadjivasiliou, C / Halder, S / Hartbrich, O / Hayasaka, K / Hayashii, H / Hearty, C / Hedges, M T / Heredia de la Cruz, I / Hernández Villanueva, M / Hershenhorn, A / Higuchi, T / Hill, E C / Hirata, H / Hoek, M / Hohmann, M / Hsu, C-L / Hu, Y / Inami, K / Inguglia, G / Irakkathil Jabbar, J / Ishikawa, A / Itoh, R / Jackson, P / Jacobs, W W / Jaffe, D E / Jang, E-J / Jia, S / Jin, Y / Joo, C / Kaliyar, A B / Kandra, J / Karyan, G / Kato, Y / Kichimi, H / Kiesling, C / Kim, C-H / Kim, D Y / Kim, H J / Kim, S-H / Kim, Y-K / Kimmel, T D / Kinoshita, K / Kleinwort, C / Kodyš, P / Koga, T / Kohani, S / Komarov, I / Korpar, S / Kraetzschmar, T M G / Križan, P / Krokovny, P / Kuhr, T / Kumar, M / Kumar, R / Kumara, K / Kurz, S / Kwon, Y-J / Lacaprara, S / La Licata, C / Lanceri, L / Lange, J S / Lee, I-S / Lee, S C / Leitl, P / Levit, D / Lewis, P M / Li, C / Li, L K / Li, Y B / Libby, J / Lieret, K / Li Gioi, L / Liptak, Z / Liu, Q Y / Liventsev, D / Longo, S / Luo, T / MacQueen, C / Maeda, Y / Manfredi, R / Manoni, E / Marcello, S / Marinas, C / Martini, A / Masuda, M / Matsuoka, K / Matvienko, D / Meggendorfer, F / Meier, F / Merola, M / Metzner, F / Milesi, M / Miller, C / Miyabayashi, K / Mizuk, R / Azmi, K / Mohanty, G B / Moser, H-G / Mrvar, M / Müller, F J / Mussa, R / Nakamura, I / Nakao, M / Nakazawa, H / Natochii, A / Niebuhr, C / Nisar, N K / Nishida, S / Nouxman, M H A / Ogawa, K / Ogawa, S / Ono, H / Oskin, P / Ozaki, H / Pakhlov, P / Paladino, A / Panta, A / Paoloni, E / Pardi, S / Park, H / Park, S-H / Paschen, B / Passeri, A / Pathak, A / Patra, S / Paul, S / Pedlar, T K / Peruzzi, I / Peschke, R / Piccolo, M / Piilonen, L E / Polat, G / Popov, V / Praz, C / Prencipe, E / Prim, M T / Purohit, M V / Rad, N / Rados, P / Rasheed, R / Reif, M / Reiter, S / Remnev, M / Ripp-Baudot, I / Ritter, M / Ritzert, M / Rizzo, G / Robertson, S H / Rodríguez Pérez, D / Roney, J M / Rosenfeld, C / Rostomyan, A / Rout, N / Sahoo, D / Sakai, Y / Sanders, D A / Sandilya, S / Sangal, A / Santelj, L / Sato, Y / Savinov, V / Scavino, B / Schwanda, C / Schwartz, A J / Seddon, R M / Seino, Y / Selce, A / Senyo, K / Serrano, J / Sevior, M E / Sfienti, C / Shiu, J-G / Sibidanov, A / Simon, F / Sobie, R J / Soffer, A / Solovieva, E / Spataro, S / Spruck, B / Starič, M / Stefkova, S / Stottler, Z S / Stroili, R / Strube, J / Sumihama, M / Sumiyoshi, T / Summers, D J / Sutcliffe, W / Svidras, H / Tabata, M / Takizawa, M / Tamponi, U / Tanaka, S / Tanida, K / Tanigawa, H / Taras, P / Tenchini, F / Tonelli, D / Torassa, E / Trabelsi, K / Uchida, M / Uglov, T / Unger, K / Unno, Y / Uno, S / Urquijo, P / Ushiroda, Y / Vahsen, S E / van Tonder, R / Varner, G S / Varvell, K E / Vinokurova, A / Vitale, L / Waheed, E / Wakai, M / Wakeling, H M / Wang, C H / Wang, M-Z / Wang, X L / Warburton, A / Watanabe, M / Watanuki, S / Webb, J / Wehle, S / Welsch, M / Wessel, C / Wiechczynski, J / Windel, H / Won, E / Wu, L J / Xu, X P / Yabsley, B / Yan, W / Yang, S B / Ye, H / Yonenaga, M / Yuan, C Z / Yusa, Y / Zani, L / Zhou, Q D / Zhukova, V I

Physical review letters

2020 Volume 125, Issue 16, Page(s) 161806

Abstract: We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e^{+}e^{-}→γa, a→γγ in the mass range 0.2

Abstract	We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e^{+}e^{-}→γa, a→γγ in the mass range 0.2<m_{a}<9.7 GeV/c^{2} using data corresponding to an integrated luminosity of (445±3) pb^{-1}. Light pseudoscalars interacting predominantly with standard model gauge bosons (so-called axionlike particles or ALPs) are frequently postulated in extensions of the standard model. We find no evidence for ALPs and set 95% confidence level upper limits on the coupling strength g_{aγγ} of ALPs to photons at the level of 10^{-3} GeV^{-1}. The limits are the most restrictive to date for 0.2<m_{a}<1 GeV/c^{2}.<br />
Language	English
Publishing date	2020-02-04
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.125.161806
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Resistive Plate Chamber Digitization in a Hadronic Shower Environment

Deng, Z. / Li, Y. / Wang, Y. / Yue, Q. / Yang, Z. / Apostolakis, J. / Folger, G. / Grefe, C. / Ivantchenko, V. / Ribon, A. / Uzhinskiy, V. / Boumediene, D. / Carloganu, C. / Français, V. / Cho, G. / Kim, D-W. / Lee, S. C. / Park, W. / Vallecorsa, S. /

Cauwenbergh, S. / Tytgat, M. / Pingault, A. / Zaganidis, N. / Brianne, E. / Ebrahimi, A. / Gadow, K. / Göttlicher, P. / Günter, C. / Hartbrich, O. / Hermberg, B. / Irles, A. / Krivan, F. / Krüger, K. / Kvasnicka, J. / Lu, S. / Lutz, B. / Morgunov, V. / Neubüser, C. / Provenza, A. / Reinecke, M. / Sefkow, F. / Schuwalow, S. / Tran, H. L. / Garutti, E. / Laurien, S. / Matysek, M. / Ramilli, M. / Schroeder, S. / Bilki, B. / Norbeck, E. / Northacker, D. / Onel, Y. / Chang, S. / Khan, A. / Kim, D. H. / Kong, D. J. / Oh, Y. D. / Kawagoe, K. / Hirai, H. / Sudo, Y. / Suehara, T. / Sumida, H. / Yoshioka, T. / Gil, E. Cortina / Mannai, S. / Buridon, V. / Combaret, C. / Caponetto, L. / Eté, R. / Garillot, G. / Grenier, G. / Han, R. / Ianigro, J. C. / Kieffer, R. / Laktineh, I. / Lumb, N. / Mathez, H. / Mirabito, L. / Petrukhin, A. / Steen, A. / Antequera, J. Berenguer / Alamillo, E. Calvo / Fouz, M. -C. / Marin, J. / Puerta-Pelayo, J. / Verdugo, A. / Chadeeva, M. / Danilov, M. / Gabriel, M. / Goecke, P. / Kiesling, C. / vanderKolk, N. / Simon, F. / Szalay, M. / Bilokin, S. / Bonis, J. / Cornebise, P. / Richard, F. / Pöschl, R. / Rouëné, J. / Thiebault, A. / Zerwas, D. / Anduze, M. / Balagura, V. / Belkadhi, K. / Boudry, V. / Brient, J-C. / Cornat, R. / Frotin, M. / Gastaldi, F. / Haddad, Y. / Magniette, F. / Ruan, M. / Rubio-Roy, M. / Shpak, K. / Videau, H. / Yu, D. / Callier, S. / di Lorenzo, S. Conforti / Dulucq, F. / Martin-Chassard, G. / de la Taille, Ch. / Raux, L. / Seguin-Moreau, N. / Kotera, K. / Ono, H. / Takeshita, T. / Corriveau, F.

2016

Abstract: The CALICE Semi-Digital Hadron Calorimeter (SDHCAL) technological prototype is a sampling calorimeter using Glass Resistive Plate Chamber detectors with a three-threshold readout as the active medium. This technology is one of the two options proposed ... ...

Abstract	The CALICE Semi-Digital Hadron Calorimeter (SDHCAL) technological prototype is a sampling calorimeter using Glass Resistive Plate Chamber detectors with a three-threshold readout as the active medium. This technology is one of the two options proposed for the hadron calorimeter of the International Large Detector for the International Linear Collider. The prototype was exposed to beams of muons, electrons and pions of different energies at the CERN Super Proton Synchrotron. To be able to study the performance of such a calorimeter in future experiments it is important to ensure reliable simulation of its response. In this paper we present our prototype simulation performed with GEANT4 and the digitization procedure achieved with an algorithm called SimDigital. A detailed description of this algorithm is given and the methods to determinate its parameters using muon tracks and electromagnetic showers are explained. The comparison with hadronic shower data shows a good agreement up to 50 GeV. Discrepancies are observed at higher energies. The reasons for these differences are investigated.
Keywords	Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
Subject code	621
Publishing date	2016-04-15
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Performance of the CMS High Granularity Calorimeter prototype to charged pion beams of 20$-$300 GeV/c

Acar, B. / Adamov, G. / Adloff, C. / Afanasiev, S. / Akchurin, N. / Akgün, B. / Alhusseini, M. / Alison, J. / de Almeida, J. P. Figueiredo de sa Sousa / de Almeida, P. G. Dias / Alpana, A. / Alyari, M. / Andreev, I. / Aras, U. / Aspell, P. / Atakisi, I. O. / Bach, O. / Baden, A. / Bakas, G. /

Bakshi, A. / Banerjee, S. / DeBarbaro, P. / Bargassa, P. / Barney, D. / Beaudette, F. / Beaujean, F. / Becheva, E. / Becker, A. / Behera, P. / Belloni, A. / Bergauer, T. / Berni, M. El / Besancon, M. / Bhattacharya, S. / Bhowmik, D. / Bilki, B. / Bilokin, S. / Blazey, G. C. / Blekman, F. / Bloch, P. / Bodek, A. / Bonanomi, M. / Bonis, J. / Bonnemaison, A. / Bonomally, S. / Borg, J. / Bouyjou, F. / Bower, N. / Braga, D. / Brennan, L. / Brianne, E. / Brondolin, E. / Bryant, P. / Buhmann, E. / Buhmann, P. / Butler-Nalin, A. / Bychkova, O. / Callier, S. / Calvet, D. / Canderan, K. / Cankocak, K. / Cao, X. / Cappati, A. / Caraway, B. / Caregari, S. / Carty, C. / Cauchois, A. / Ceard, L. / Cerci, D. S. / Cerci, S. / Cerminara, G. / Chadeeva, M. / Charitonidis, N. / Chatterjee, R. / Chen, J. A. / Chen, Y. M. / Cheng, H. J. / Cheng, K. Y. / Cheung, H. / Chokheli, D. / Cipriani, M. / Čoko, D. / Couderc, F. / Cuba, E. / Danilov, M. / Dannheim, D. / Daoud, W. / Das, I. / Dauncey, P. / Davies, G. / Davignon, O. / Day, E. / Debbins, P. / Defranchis, M. M. / Delagnes, E. / Demiragli, Z. / Demirbas, U. / Derylo, G. / Diaz, D. / Diehl, L. / Dinaucourt, P. / Dincer, G. G. / Dittmann, J. / Dragicevic, M. / Dugad, S. / Dulucq, F. / Dumanoglu, I. / Dünser, M. / Dutta, S. / Dutta, V. / Edberg, T. K. / Elias, F. / Emberger, L. / Eno, S. C. / Ershov, Yu. / Extier, S. / Fahim, F. / Fallon, C. / Fard, K. Sarbandi / Fedi, G. / Ferragina, L. / Forthomme, L. / Frahm, E. / Franzoni, G. / Freeman, J. / French, T. / Gadow, K. / Gandhi, P. / Ganjour, S. / Gao, X. / Garcia, M. T. Ramos / Garcia-Bellido, A. / Garutti, E. / Gastaldi, F. / Gastler, D. / Gecse, Z. / Germer, A. / Gerwig, H. / Gevin, O. / Ghosh, S. / Gilbert, A. / Gilbert, W. / Gill, K. / Gingu, C. / Gninenko, S. / Golunov, A. / Golutvin, I. / Gonultas, B. / Gorbounov, N. / Göttlicher, P. / Gouskos, L. / Graf, C. / Gray, A. B. / Grieco, C. / Gr\"önroos, S. / Gu, Y. / Guilloux, F. / Guler, E. Gurpinar / Guler, Y. / Gülmez, E. / Guo, J. / Gutti, H. / Hakimi, A. / Hammer, M. / Hartbrich, O. / Hassanshahi, H. M. / Hatakeyama, K. / Hazen, E. / Heering, A. / Hegde, V. / Heintz, U. / Heuchel, D. / Hinton, N. / Hirschauer, J. / Hoff, J. / Hou, W. S. / Hou, X. / Hua, H. / Huck, S. / Hussain, A. / Incandela, J. / Irles, A. / Irshad, A. / Isik, C. / Jain, S. / Jaroslavceva, J. / Jheng, H. R. / Joshi, U. / Kaadze, K. / Kachanov, V. / Kalipoliti, L. / Kaminskiy, A. / Kanuganti, A. R. / Kao, Y. W. / Kapoor, A. / Kara, O. / Karneyeu, A. / Kałuzińska, O. / Kaya, M. / Kaya, O. / Kazhykharim, Y. / Khan, F. A. / Khukhunaishvili, A. / Kieseler, J. / Kilpatrick, M. / Kim, S. / Koetz, K. / Kolberg, T. / Komm, M. / Köseyan, O. K. / Kraus, V. / Krawczyk, M. / Kristiansen, K. / Kristić, A. / Krohn, M. / Kronheim, B. / Krüger, K. / Kulis, S. / Kumar, M. / Kunori, S. / Kuo, C. M. / Kuryatkov, V. / Kvasnicka, J. / Kyre, S. / Lai, Y. / Lamichhane, K. / Landsberg, G. / Lange, C. / Langford, J. / Laurien, S. / Lee, M. Y. / Lee, S. W. / Leiton, A. G. Stahl / Levin, A. / Li, A. / Li, J. H. / Li, Y. Y. / Liang, Z. / Liao, H. / Lin, Z. / Lincoln, D. / Linssen, L. / Lipton, R. / Liu, G. / Liu, Y. / Lobanov, A. / Lohezic, V. / Lomidze, D. / Lu, R. S. / Lu, S. / Lupi, M. / Lysova, I. / Magnan, A. -M. / Magniette, F. / Mahjoub, A. / Martens, S. / Matysek, M. / Meier, B. / Malakhov, A. / Mallios, S. / Mandjavize, I. / Mannelli, M. / Mans, J. / Marchioro, A. / Martelli, A. / Martinez, G. / Masterson, P. / Matthewman, M. / Mayekar, S. N. / David, A. / Coco, S. / Meng, B. / Menkel, A . / Mestvirishvili, A. / Milella, G. / Mirza, I. / Moccia, S. / Mohanty, G. B. / Monti, F. / Moortgat, F. W. / Morrissey, I. / Motta, J. / Murthy, S. / Musić, J. / Musienko, Y. / Nabili, S. / Nguyen, M. / Nikitenko, A. / Noonan, D. / Noy, M. / Nurdan, K. / Nursanto, M. Wulansatiti / Ochando, C. / Odell, N. / Okawa, H. / Onel, Y. / Ortez, W. / Ozegović, J. / Ozkorucuklu, S. / Paganis, E. / Palmer, C. A. / Pandey, S. / Pantaleo, F. / Papageorgakis, C. / Papakrivopoulos, I. / Paranjpe, M. / Parshook, J. / Pastika, N. / Paulini, M. / Peitzmann, T. / Peltola, T. / Peng, N. / Perraguin, A. Buchot / Petiot, P. / Pierre-Emile, T. / Pinto, M. Vicente Barreto / Popova, E. / Pöschl, R. / Prosper, H. / Prvan, M. / Puljak, I. / Qasim, S. R. / Qu, H. / Quast, T. / Quinn, R. / Quinnan, M. / Rane, A. / Rao, K. K. / Rapacz, K. / Raux, L. / Redjeb, W. / Reinecke, M. / Revering, M. / Richard, F. / Roberts, A. / Sanchez, A. M. / Rohlf, J. / Rolph, J. / Romanteau, T. / Rosado, M. / Rose, A. / Rovere, M. / Roy, A. / Rubinov, P. / Rusack, R. / Rusinov, V. / Ryjov, V. / Sahin, O. M. / Salerno, R. / Saradhy, R. / Sarkar, T. / Sarkisla, M. A. / Sauvan, J. B. / Schmidt, I. / Schmitt, M. / Schuwalow, S. / Scott, E. / Seez, C. / Sefkow, F. / Selivanova, D. / Sharma, S. / Shelake, M. / Shenai, A. / Shukla, R. / Sicking, E. / De, M. / Silva, P. / Simkina, P. / Simon, F. / Simsek, A. E. / Sirois, Y. / Smirnov, V. / Sobering, T. J. / Spencer, E. / Srimanobhas, N. / Steen, A. / Strait, J. / Strobbe, N. / Su, X. F. / Sudo, Y. / Suarez, C. Mantilla / Sukhov, E. / Sulak, L. / Sun, L. / Suryadevara, P. / Syal, C. / de La Taille, C. / Tali, B. / Tan, C. L. / Tao, J. / Tarabini, A. / Tatli, T. / Thaus, R. / Taylor, R. D. / Tekten, S. / Thiebault, A. / Thienpont, D. / Tiley, C. / Tiras, E. / Titov, M. / Tlisov, D. / Tok, U. G. / Kayis, A. / Troska, J. / Tsai, L. S. / Tsamalaidze, Z. / Tsipolitis, G. / Tsirou, A. / Undleeb, S. / Urbanski, D. / Uslan, E. / Ustinov, V. / Uzunian, A. / Varela, J. / Velasco, M. / Vernazza, E. / Viazlo, O. / Vichoudis, P. / Virdee, T. / Voirin, E. / Vojinovi\c, M. / Vojinovic, M. / Wade, A. / Wang, C. / Wang, C. C. / Wang, D. / Wang, F. / Wang, X. / Wang, Z. / Wayne, M. / Webb, S. N. / Whitbeck, A. / Wickwire, R. / Wilson, J. S. / Wu, H. Y. / Wu, L. / Xiao, M. / Yang, J. / Yeh, C. H / Yohay, R. / Yu, D. / Yu, S. S. / Yuan, C. / Miao, Y. / Yumiceva, F. / Yusuff, I. / Zabi, A. / Zacharopoulou, A. / Zamiatin, N. / Zarubin, A. / Zehetner, P. / Zerwas, D. / Zhang, H. / Zhang, J. / Zhang, Y. / Zhang, Z. / Zhao, X.

2022

Abstract: The upgrade of the CMS experiment for the high luminosity operation of the LHC comprises the replacement of the current endcap calorimeter by a high granularity sampling calorimeter (HGCAL). The electromagnetic section of the HGCAL is based on silicon ... ...

Abstract	The upgrade of the CMS experiment for the high luminosity operation of the LHC comprises the replacement of the current endcap calorimeter by a high granularity sampling calorimeter (HGCAL). The electromagnetic section of the HGCAL is based on silicon sensors interspersed between lead and copper (or copper tungsten) absorbers. The hadronic section uses layers of stainless steel as an absorbing medium and silicon sensors as an active medium in the regions of high radiation exposure, and scintillator tiles directly readout by silicon photomultipliers in the remaining regions. As part of the development of the detector and its readout electronic components, a section of a silicon-based HGCAL prototype detector along with a section of the CALICE AHCAL prototype was exposed to muons, electrons and charged pions in beam test experiments at the H2 beamline at the CERN SPS in October 2018. The AHCAL uses the same technology as foreseen for the HGCAL but with much finer longitudinal segmentation. The performance of the calorimeters in terms of energy response and resolution, longitudinal and transverse shower profiles is studied using negatively charged pions, and is compared to GEANT4 predictions. This is the first report summarizing results of hadronic showers measured by the HGCAL prototype using beam test data. Comment: Accepted for publication by JINST
Keywords	Physics - Instrumentation and Detectors
Subject code	621
Publishing date	2022-11-09
Publishing country	us
Document type	Book ; Online
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Book ; Online: Measurement of the branching fractions of $B\to\eta' K$ decays using 2019/2020 Belle II data

Belle II Collaboration / Abudinén, F. / Adachi, I. / Adak, R. / Adamczyk, K. / Ahlburg, P. / Ahn, J. K. / Aihara, H. / Akopov, N. / Aloisio, A. / Ameli, F. / Andricek, L. / Ky, N. Anh / Asner, D. M. / Atmacan, H. / Aulchenko, V. / Aushev, T. / Aushev, V. / Aziz, T. /

Babu, V. / Bacher, S. / Baehr, S. / Bahinipati, S. / Bakich, A. M. / Bambade, P. / Banerjee, Sw. / Bansal, S. / Barrett, M. / Batignani, G. / Baudot, J. / Beaulieu, A. / Becker, J. / Behera, P. K. / Bender, M. / Bennett, J. V. / Bernieri, E. / Bernlochner, F. U. / Bertemes, M. / Bertholet, E. / Bessner, M. / Bettarini, S. / Bhardwaj, V. / Bhuyan, B. / Bianchi, F. / Bilka, T. / Bilokin, S. / Biswas, D. / Bobrov, A. / Bondar, A. / Bonvicini, G. / Bozek, A. / Bračko, M. / Branchini, P. / Braun, N. / Briere, R. A. / Browder, T. E. / Brown, D. N. / Budano, A. / Burmistrov, L. / Bussino, S. / Campajola, M. / Cao, L. / Caria, G. / Casarosa, G. / Cecchi, C. / Červenkov, D. / Chang, M. C. / Chang, P. / Cheaib, R. / Chekelian, V. / Chen, C. / Chen, Y. Q. / Chen, Y. T. / Cheon, B. G. / Chilikin, K. / Chirapatpimol, K. / Cho, H. E. / Cho, K. / Cho, S. J. / Choi, S. K. / Choudhury, S. / Cinabro, D. / Corona, L. / Cremaldi, L. M. / Cuesta, D. / Cunliffe, S. / Czank, T. / Dash, N. / Dattola, F. / De La Cruz-Burelo, E. / de Marino, G. / De Nardo, G. / De Nuccio, M. / De Pietro, G. / de Sangro, R. / Deschamps, B. / Destefanis, M. / Dey, S. / De Yta-Hernandez, A. / Di Canto, A. / Di Capua, F. / Di Carlo, S. / Dingfelder, J. / Doležal, Z. / Jiménez, I. Domínguez / Dong, T. V. / Dort, K. / Dossett, D. / Dubey, S. / Duell, S. / Dujany, G. / Eidelman, S. / Eliachevitch, M. / Epifanov, D. / Fast, J. E. / Ferber, T. / Ferlewicz, D. / Fillinger, T. / Finocchiaro, G. / Fiore, S. / Fioroni, V. / Fischer, P. / Fodor, A. / Forti, F. / Frey, A. / Friedl, M. / Fulsom, B. G. / Gabriel, M. / Gabyshev, N. / Ganiev, E. / Garcia-Hernandez, M. / Garg, R. / Garmash, A. / Gaur, V. / Gaz, A. / Gebauer, U. / Gelb, M. / Gellrich, A. / Gemmler, J. / Geßler, T. / Getzkow, D. / Giordano, R. / Giri, A. / Glazov, A. / Gobbo, B. / Godang, R. / Goldenzweig, P. / Golob, B. / Gomis, P. / Grace, P. / Gradl, W. / Graziani, E. / Greenwald, D. / Guan, Y. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hayasaka, K. / Hayashii, H. / Hazra, S. / Hearty, C. / Hedges, M. T. / de la Cruz, I. Heredia / Villanueva, M. Hernández / Hershenhorn, A. / Higuchi, T. / Hill, E. C. / Hirata, H. / Hoek, M. / Hohmann, M. / Hollitt, S. / Hotta, T. / Hsu, C. L. / Hu, Y. / Huang, K. / Humair, T. / Iijima, T. / Inami, K. / Inguglia, G. / Jabbar, J. Irakkathil / Ishikawa, A. / Itoh, R. / Iwasaki, M. / Iwasaki, Y. / Iwata, S. / Jackson, P. / Jacobs, W. W. / Jaegle, I. / Jaffe, D. E. / Jang, E. J. / Jeandron, M. / Jeon, H. B. / Jia, S. / Jin, Y. / Joo, C. / Joo, K. K. / Junkerkalefeld, H. / Kadenko, I. / Kahn, J. / Kakuno, H. / Kaliyar, A. B. / Kandra, J. / Kang, K. H. / Kapusta, P. / Karl, R. / Karyan, G. / Kato, Y. / Kawai, H. / Kawasaki, T. / Keck, T. / Ketter, C. / Kichimi, H. / Kiesling, C. / Kim, B. H. / Kim, C. H. / Kim, D. Y. / Kim, H. J. / Kim, K. H. / Kim, K. / Kim, S. H. / Kim, Y. K. / Kim, Y. / Kimmel, T. D. / Kindo, H. / Kinoshita, K. / Kirby, B. / Kleinwort, C. / Knysh, B. / Kodyš, P. / Koga, T. / Kohani, S. / Komarov, I. / Konno, T. / Korpar, S. / Kovalchuk, N. / Kraetzschmar, T. M. G. / Krinner, F. / Križan, P. / Kroeger, R. / Krohn, J. F. / Krokovny, P. / Krüger, H. / Kuehn, W. / Kuhr, T. / Kumar, J. / Kumar, M. / Kumar, R. / Kumara, K. / Kumita, T. / Kunigo, T. / Künzel, M. / Kurz, S. / Kuzmin, A. / Kvasnička, P. / Kwon, Y. J. / Lacaprara, S. / Lai, Y. T. / La Licata, C. / Lalwani, K. / Lanceri, L. / Lange, J. S. / Lautenbach, K. / Laycock, P. J. / Diberder, F. R. Le / Lee, I. S. / Lee, S. C. / Leitl, P. / Levit, D. / Lewis, P. M. / Li, C. / Li, L. K. / Li, S. X. / Li, Y. B. / Libby, J. / Lieret, K. / Gioi, L. Li / Lin, J. / Liptak, Z. / Liu, Q. Y. / Liu, Z. A. / Liventsev, D. / Longo, S. / Loos, A. / Lu, P. / Lubej, M. / Lueck, T. / Luetticke, F. / Luo, T. / Lyu, C. / MacQueen, C. / Maeda, Y. / Maggiora, M. / Maity, S. / Manfredi, R. / Manoni, E. / Marcello, S. / Marinas, C. / Martini, A. / Masuda, M. / Matsuda, T. / Matsuoka, K. / Matvienko, D. / McNeil, J. / Meggendorfer, F. / Mei, J. C. / Meier, F. / Merola, M. / Metzner, F. / Milesi, M. / Miller, C. / Miyabayashi, K. / Miyake, H. / Miyata, H. / Mizuk, R. / Azmi, K. / Mohanty, G. B. / Moon, H. / Moon, T. / Grimaldo, J. A. Mora / Morii, T. / Moser, H. G. / Mrvar, M. / Mueller, F. / Müller, F. J. / Muller, Th. / Muroyama, G. / Murphy, C. / Mussa, R. / Nakagiri, K. / Nakamura, I. / Nakamura, K. R. / Nakano, E. / Nakao, M. / Nakayama, H. / Nakazawa, H. / Nanut, T. / Natkaniec, Z. / Natochii, A. / Nayak, M. / Nazaryan, G. / Neverov, D. / Niebuhr, C. / Niiyama, M. / Ninkovic, J. / Nisar, N. K. / Nishida, S. / Nishimura, K. / Nishimura, M. / Nouxman, M. H. A. / Oberhof, B. / Ogawa, K. / Ogawa, S. / Olsen, S. L. / Onishchuk, Y. / Ono, H. / Onuki, Y. / Oskin, P. / Oxford, E. R. / Ozaki, H. / Pakhlov, P. / Pakhlova, G. / Paladino, A. / Pang, T. / Panta, A. / Paoloni, E. / Pardi, S. / Park, H. / Park, S. H. / Paschen, B. / Passeri, A. / Pathak, A. / Patra, S. / Paul, S. / Pedlar, T. K. / Peruzzi, I. / Peschke, R. / Pestotnik, R. / Piccolo, M. / Piilonen, L. E. / Podesta-Lerma, P. L. M. / Polat, G. / Popov, V. / Praz, C. / Prell, S. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / Raiz, S. / Rasheed, R. / Reif, M. / Reiter, S. / Remnev, M. / Resmi, P. K. / Ripp-Baudot, I. / Ritter, M. / Ritzert, M. / Rizzo, G. / Rizzuto, L. B. / Robertson, S. H. / Pérez, D. Rodríguez / Roney, J. M. / Rosenfeld, C. / Rostomyan, A. / Rout, N. / Rozanska, M. / Russo, G. / Sahoo, D. / Sakai, Y. / Sanders, D. A. / Sandilya, S. / Sangal, A. / Santelj, L. / Sartori, P. / Sasaki, J. / Sato, Y. / Savinov, V. / Scavino, B. / Schram, M. / Schreeck, H. / Schueler, J. / Schwanda, C. / Schwartz, A. J. / Schwenker, B. / Seddon, R. M. / Seino, Y. / Selce, A. / Senyo, K. / Seong, I. S. / Serrano, J. / Sevior, M. E. / Sfienti, C. / Shebalin, V. / Shen, C. P. / Shibuya, H. / Shiu, J. G. / Shwartz, B. / Sibidanov, A. / Simon, F. / Singh, J. B. / Skambraks, S. / Smith, K. / Sobie, R. J. / Soffer, A. / Sokolov, A. / Soloviev, Y. / Solovieva, E. / Spataro, S. / Spruck, B. / Starič, M. / Stefkova, S. / Stottler, Z. S. / Stroili, R. / Strube, J. / Stypula, J. / Sumihama, M. / Sumisawa, K. / Sumiyoshi, T. / Summers, D. J. / Sutcliffe, W. / Suzuki, K. / Suzuki, S. Y. / Svidras, H. / Tabata, M. / Takahashi, M. / Takizawa, M. / Tamponi, U. / Tanaka, S. / Tanida, K. / Tanigawa, H. / Taniguchi, N. / Tao, Y. / Taras, P. / Tenchini, F. / Tonelli, D. / Torassa, E. / Trabelsi, K. / Tsuboyama, T. / Tsuzuki, N. / Uchida, M. / Ueda, I. / Uehara, S. / Ueno, T. / Uglov, T. / Unger, K. / Unno, Y. / Uno, S. / Urquijo, P. / Ushiroda, Y. / Usov, Y. V. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / Wach, B. / Waheed, E. / Wakeling, H. M. / Wan, K. / Abdullah, W. Wan / Wang, B. / Wang, C. H. / Wang, M. Z. / Wang, X. L. / Warburton, A. / Watanabe, M. / Watanuki, S. / Webb, J. / Wehle, S. / Welsch, M. / Wessel, C. / Wiechczynski, J. / Wieduwilt, P. / Windel, H. / Won, E. / Wu, L. J. / Xu, X. P. / Yabsley, B. / Yamada, S. / Yan, W. / Yang, S. B. / Ye, H. / Yelton, J. / Yeo, I. / Yin, J. H. / Yonenaga, M. / Yook, Y. M. / Yoshihara, K. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yusa, Y. / Zani, L. / Zhang, J. Z. / Zhang, Y. / Zhang, Z. / Zhilich, V. / Zhou, Q. D. / Zhou, X. Y. / Zhukova, V. I. / Zhulanov, V. / Zupanc, A.

2021

Abstract: This note describes the rediscovery of $B\to\eta' K$ decays in Belle II data, both in the charged and neutral final state: $B_0\to\eta' K_S$ and $B^\pm\to\eta' K^\pm$. The $\eta'$ is searched for in two decay modes: $\eta'\to\eta\pi^+\pi^-$ with $\eta\to\ ...

Abstract	This note describes the rediscovery of $B\to\eta' K$ decays in Belle II data, both in the charged and neutral final state: $B_0\to\eta' K_S$ and $B^\pm\to\eta' K^\pm$. The $\eta'$ is searched for in two decay modes: $\eta'\to\eta\pi^+\pi^-$ with $\eta\to\gamma\gamma$, and $\eta'\to\rho\gamma$. The analysis uses data collected in 2019 and 2020 at the SuperKEKB asymmetric $e^+e^-$ collider, with an integrated luminosity of $62.8~fb^{-1}$, corresponding to $68.2$ million of $B\bar{B}$ pairs produced. The signal yield is obtained via an unbinned maximum likelihood fit to signal sensitive variables, obtaining branching ratios: $$\mathcal{B}\left(B^\pm\to\eta'K^\pm\right) = \left(63.4~^{+3.4}_{-3.3}\,(stat)\,\pm3.2\,(syst)\,\right) \times10^{-6} $$ $$\mathcal{B}\left(B_0\to\eta'K_S\right) = \left(59.9~^{+5.8}_{-5.5}\,(stat)\,\pm2.9\,(syst)\,\right) \times10^{-6} $$ which are consistent with world average. Comment: 17 pages, 6 figures
Keywords	High Energy Physics - Experiment
Subject code	551
Publishing date	2021-04-13
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Angular analysis of $B^+ \to \rho^+\rho^0$ decays reconstructed in 2019-2020 Belle II data

Belle II collaboration / Abudinén, F. / Adachi, I. / Adak, R. / Adamczyk, K. / Ahlburg, P. / Ahn, J. K. / Aihara, H. / Akopov, N. / Aloisio, A. / Ameli, F. / Andricek, L. / Ky, N. Anh / Asner, D. M. / Atmacan, H. / Aulchenko, V. / Aushev, T. / Aushev, V. / Aziz, T. /

Babu, V. / Bacher, S. / Baehr, S. / Bahinipati, S. / Bakich, A. M. / Bambade, P. / Banerjee, Sw. / Bansal, S. / Barrett, M. / Batignani, G. / Baudot, J. / Beaulieu, A. / Becker, J. / Behera, P. K. / Bender, M. / Bennett, J. V. / Bernieri, E. / Bernlochner, F. U. / Bertemes, M. / Bertholet, E. / Bessner, M. / Bettarini, S. / Bhardwaj, V. / Bhuyan, B. / Bianchi, F. / Bilka, T. / Bilokin, S. / Biswas, D. / Bobrov, A. / Bondar, A. / Bonvicini, G. / Bozek, A. / Brač, M. / Branchini, P. / Braun, N. / Briere, R. A. / Browder, T. E. / Brown, D. N. / Budano, A. / Burmistrov, L. / Bussino, S. / Campajola, M. / Cao, L. / Caria, G. / Casarosa, G. / Cecchi, C. / Č, D. / Chang, M. -C. / Chang, P. / Cheaib, R. / Chekelian, V. / Chen, C. / Chen, Y. Q. / Chen, Y. -T. / Cheon, B. G. / Chilikin, K. / Chirapatpimol, K. / Cho, H. -E. / Cho, K. / Cho, S. -J. / Choi, S. -K. / Choudhury, S. / Cinabro, D. / Corona, L. / Cremaldi, L. M. / Cuesta, D. / Cunliffe, S. / Czank, T. / Dash, N. / Dattola, F. / De La Cruz-Burelo, E. / de Marino, G. / De Nardo, G. / De Nuccio, M. / De Pietro, G. / de Sangro, R. / Deschamps, B. / Destefanis, M. / Dey, S. / De Yta-Hernandez, A. / Di Canto, A. / Di Capua, F. / Di Carlo, S. / Dingfelder, J. / Dolež, Z. / Domí, I. / Dong, T. V. / Dort, K. / Dossett, D. / Dubey, S. / Duell, S. / Dujany, G. / Eidelman, S. / Eliachevitch, M. / Epifanov, D. / Fast, J. E. / Ferber, T. / Ferlewicz, D. / Fillinger, T. / Finocchiaro, G. / Fiore, S. / Fischer, P. / Fodor, A. / Forti, F. / Frey, A. / Friedl, M. / Fulsom, B. G. / Gabriel, M. / Gabyshev, N. / Ganiev, E. / Garcia-Hernandez, M. / Garg, R. / Garmash, A. / Gaur, V. / Gaz, A. / Gebauer, U. / Gelb, M. / Gellrich, A. / Gemmler, J. / Geßler, T. / Getzkow, D. / Giordano, R. / Giri, A. / Glazov, A. / Gobbo, B. / Godang, R. / Goldenzweig, P. / Golob, B. / Gomis, P. / Grace, P. / Gradl, W. / Graziani, E. / Greenwald, D. / Guan, Y. / Gudkova, K. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hayasaka, K. / Hayashii, H. / Hazra, S. / Hearty, C. / Hedges, M. T. / de la Cruz, I. Heredia / Herná, M. / Hershenhorn, A. / Higuchi, T. / Hill, E. C. / Hirata, H. / Hoek, M. / Hohmann, M. / Hollitt, S. / Hotta, T. / Hsu, C. -L. / Hu, Y. / Huang, K. / Humair, T. / Iijima, T. / Inami, K. / Inguglia, G. / Jabbar, J. Irakkathil / Ishikawa, A. / Itoh, R. / Iwasaki, M. / Iwasaki, Y. / Iwata, S. / Jackson, P. / Jacobs, W. W. / Jaegle, I. / Jaffe, D. E. / Jang, E. -J. / Jeandron, M. / Jeon, H. B. / Jia, S. / Jin, Y. / Joo, C. / Joo, K. K. / Junkerkalefeld, H. / Kadenko, I. / Kahn, J. / Kakuno, H. / Kaliyar, A. B. / Kandra, J. / Kang, K. H. / Kapusta, P. / Karl, R. / Karyan, G. / Kato, Y. / Kawai, H. / Kawasaki, T. / Keck, T. / Ketter, C. / Kichimi, H. / Kiesling, C. / Kim, B. H. / Kim, C. -H. / Kim, D. Y. / Kim, H. J. / Kim, K. -H. / Kim, K. / Kim, S. -H. / Kim, Y. -K. / Kim, Y. / Kimmel, T. D. / Kindo, H. / Kinoshita, K. / Kirby, B. / Kleinwort, C. / Knysh, B. / Kodyš, P. / Koga, T. / Kohani, S. / Komarov, I. / Konno, T. / Korobov, A. / Korpar, S. / Kovalchuk, N. / Kovalenko, E. / Kraetzschmar, T. M. G. / Krinner, F. / Križ, P. / Kroeger, R. / Krohn, J. F. / Krokovny, P. / Krüger, H. / Kuehn, W. / Kuhr, T. / Kumar, J. / Kumar, M. / Kumar, R. / Kumara, K. / Kumita, T. / Kunigo, T. / Kü, M. / Kurz, S. / Kuzmin, A. / Kvasnič, P. / Kwon, Y. -J. / Lacaprara, S. / Lai, Y. -T. / La Licata, C. / Lalwani, K. / Lanceri, L. / Lange, J. S. / Laurenza, M. / Lautenbach, K. / Laycock, P. J. / Diberder, F. R. Le / Lee, I. -S. / Lee, S. C. / Leitl, P. / Levit, D. / Lewis, P. M. / Li, C. / Li, L. K. / Li, S. X. / Li, Y. B. / Libby, J. / Lieret, K. / Gioi, L. Li / Lin, J. / Liptak, Z. / Liu, Q. Y. / Liu, Z. A. / Liventsev, D. / Longo, S. / Loos, A. / Lu, P. / Lubej, M. / Lueck, T. / Luetticke, F. / Luo, T. / Lyu, C. / MacQueen, C. / Maeda, Y. / Maggiora, M. / Maity, S. / Manfredi, R. / Manoni, E. / Marcello, S. / Marinas, C. / Martini, A. / Masuda, M. / Matsuda, T. / Matsuoka, K. / Matvienko, D. / McNeil, J. / Meggendorfer, F. / Mei, J. C. / Meier, F. / Merola, M. / Metzner, F. / Milesi, M. / Miller, C. / Miyabayashi, K. / Miyake, H. / Miyata, H. / Mizuk, R. / Azmi, K. / Mohanty, G. B. / Moon, H. / Moon, T. / Grimaldo, J. A. Mora / Morii, T. / Moser, H. -G. / Mrvar, M. / Mueller, F. / Mü, F. J. / Muller, Th. / Muroyama, G. / Murphy, C. / Mussa, R. / Nakagiri, K. / Nakamura, I. / Nakamura, K. R. / Nakano, E. / Nakao, M. / Nakayama, H. / Nakazawa, H. / Nanut, T. / Natkaniec, Z. / Natochii, A. / Nayak, M. / Nazaryan, G. / Neverov, D. / Niebuhr, C. / Niiyama, M. / Ninkovic, J. / Nisar, N. K. / Nishida, S. / Nishimura, K. / Nishimura, M. / Nouxman, M. H. A. / Oberhof, B. / Ogawa, K. / Ogawa, S. / Olsen, S. L. / Onishchuk, Y. / Ono, H. / Onuki, Y. / Oskin, P. / Oxford, E. R. / Ozaki, H. / Pakhlov, P. / Pakhlova, G. / Paladino, A. / Pang, T. / Panta, A. / Paoloni, E. / Pardi, S. / Park, H. / Park, S. -H. / Paschen, B. / Passeri, A. / Pathak, A. / Patra, S. / Paul, S. / Pedlar, T. K. / Peruzzi, I. / Peschke, R. / Pestotnik, R. / Piccolo, M. / Piilonen, L. E. / Podesta-Lerma, P. L. M. / Polat, G. / Popov, V. / Praz, C. / Prell, S. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / Raiz, S. / Rasheed, R. / Reif, M. / Reiter, S. / Remnev, M. / Resmi, P. K. / Ripp-Baudot, I. / Ritter, M. / Ritzert, M. / Rizzo, G. / Rizzuto, L. B. / Robertson, S. H. / Rodrí, D. / Roney, J. M. / Rosenfeld, C. / Rostomyan, A. / Rout, N. / Rozanska, M. / Russo, G. / Sahoo, D. / Sakai, Y. / Sanders, D. A. / Sandilya, S. / Sangal, A. / Santelj, L. / Sartori, P. / Sasaki, J. / Sato, Y. / Savinov, V. / Scavino, B. / Schram, M. / Schreeck, H. / Schueler, J. / Schwanda, C. / Schwartz, A. J. / Schwenker, B. / Seddon, R. M. / Seino, Y. / Selce, A. / Senyo, K. / Seong, I. S. / Serrano, J. / Sevior, M. E. / Sfienti, C. / Shebalin, V. / Shen, C. P. / Shibuya, H. / Shiu, J. -G. / Shwartz, B. / Sibidanov, A. / Simon, F. / Singh, J. B. / Skambraks, S. / Smith, K. / Sobie, R. J. / Soffer, A. / Sokolov, A. / Soloviev, Y. / Solovieva, E. / Spataro, S. / Spruck, B. / Starič, M. / Stefkova, S. / Stottler, Z. S. / Stroili, R. / Strube, J. / Stypula, J. / Sumihama, M. / Sumisawa, K. / Sumiyoshi, T. / Summers, D. J. / Sutcliffe, W. / Suzuki, K. / Suzuki, S. Y. / Svidras, H. / Tabata, M. / Takahashi, M. / Takizawa, M. / Tamponi, U. / Tanaka, S. / Tanida, K. / Tanigawa, H. / Taniguchi, N. / Tao, Y. / Taras, P. / Tenchini, F. / Tonelli, D. / Torassa, E. / Trabelsi, K. / Tsuboyama, T. / Tsuzuki, N. / Uchida, M. / Ueda, I. / Uehara, S. / Ueno, T. / Uglov, T. / Unger, K. / Unno, Y. / Uno, S. / Urquijo, P. / Ushiroda, Y. / Usov, Y. V. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / Wach, B. / Waheed, E. / Wakeling, H. M. / Wan, K. / Abdullah, W. Wan / Wang, B. / Wang, C. H. / Wang, M. -Z. / Wang, X. L. / Warburton, A. / Watanabe, M. / Watanuki, S. / Webb, J. / Wehle, S. / Welsch, M. / Wessel, C. / Wiechczynski, J. / Wieduwilt, P. / Windel, H. / Won, E. / Wu, L. J. / Xu, X. P. / Yabsley, B. D. / Yamada, S. / Yan, W. / Yang, S. B. / Ye, H. / Yelton, J. / Yeo, I. / Yin, J. H. / Yonenaga, M. / Yook, Y. M. / Yoshihara, K. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yusa, Y. / Zani, L. / Zhang, J. Z. / Zhang, Y. / Zhang, Z. / Zhilich, V. / Zhou, J. / Zhou, Q. D. / Zhou, X. Y. / Zhukova, V. I. / Zhulanov, V. / Zupanc, A.

2021

Abstract: We report on the first Belle II measurement of the branching fraction ($\mathcal{B}$) and longitudinal polarization fraction ($f_L$) of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ ... ...

Abstract	We report on the first Belle II measurement of the branching fraction ($\mathcal{B}$) and longitudinal polarization fraction ($f_L$) of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ decays in a sample of SuperKEKB electron-positron collisions collected by the Belle II experiment in 2019 and 2020 at the $\Upsilon$(4S) resonance and corresponding to $62.8$ fb$^{-1}$ of integrated luminosity. We fit the distributions of the difference between expected and observed $B$ candidate energy, continuum-suppression variable, dipion masses, and angular distributions of the resulting samples, to determine a signal yield of $104\pm16$ events. The signal yields are corrected for efficiencies determined from simulation and control data samples to obtain $\mathcal{B}(B^+ \to \rho^+\rho^0) = [20.6 \pm 3.2(\rm stat) \pm 4.0(\rm syst)]\times 10^{-6}$, and $f_L(B^+ \to \rho^+\rho^0) = 0.936 ^{+0.049}_{-0.041}(\rm stat)\pm 0.021(\rm syst)$. This first Belle II $B^+ \to \rho^+\rho^0$ angular analysis yields results compatible with previous determinations, and indicates Belle II performance superior to early Belle results.
Keywords	High Energy Physics - Experiment ; High Energy Physics - Phenomenology
Subject code	571
Publishing date	2021-09-23
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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