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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: Benefits of health screening among the elderly

Krohn, J. F.

Scandinavian J. Primary Health Care

1983 Volume 1, Issue 1, Page(s) 32–35

Abstract: This study evaluates the benefits of a health screening programme among the elderly in a rural district in Norway. The study was based on a random sample of persons aged 68 years or more. Among the 101 screened individuals 18 previously inknown health ... ...

Institution	N-7120 Leksvik
Abstract	This study evaluates the benefits of a health screening programme among the elderly in a rural district in Norway. The study was based on a random sample of persons aged 68 years or more. Among the 101 screened individuals 18 previously inknown health problems of importance were disclosed. Of these, the diagnostic of four cases (glaucoma simplex) were considered to be of major importance. The results of the study indicate that periodic health screening of all the elderly is hardly justified in districts with well organized and adequately staffed health services to meet the populations daily needs and demands. Such a screening programme, however, will be beneficial to the elderly who seldom or never consult a physician.
Keywords	Reihenuntersuchung ; Erwachsener 70 Jahre u. aelter ; Primaerversorgung ; Landbevoelkerung ; Norwegen ; Morbiditaet ; Retrospektive Studie ; Beurteilung
Language	English
Document type	Article
Database	Social Medicine (SOMED)

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Article: Benefits of health screening among the elderly.

Thomassen, T / Bakketeig, L S / Krohn, J F

Scandinavian journal of primary health care

1983 Volume 1, Issue 1, Page(s) 32–35

Abstract	This study evaluates the benefits of a health screening programme among the elderly in a rural district in Norway. The study was based on a random sample of persons aged 68 years or more. Among the 101 screened individuals 18 previously unknown health problems of importance were disclosed. Of these, the diagnosis of four cases (glaucoma simplex) were considered to be of major importance. The results of the study indicate that periodic health screening of all the elderly is hardly justified in districts with well organized and adequately staffed health services to meet the populations daily needs and demands. Such a screening programme, however, will be beneficial to the elderly who seldom or never consult a physician.
MeSH term(s)	Aged ; Health Services for the Aged ; Humans ; Mass Screening ; Norway ; Rural Population
Language	English
Publishing date	1983
Publishing country	United States
Document type	Journal Article
ZDB-ID	605763-9
ISSN	1502-7724 ; 0281-3432 ; 0284-6020
ISSN (online)	1502-7724
ISSN	0281-3432 ; 0284-6020
DOI	10.3109/02813438309038467
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Article: Actividad hidroelectrolítica de la 16-beta-metil-prednisona.

Cruz Krohn, J F / Abraham, J

Revista de investigacion clinica; organo del Hospital de Enfermedades de la Nutricion

1966 Volume 18, Issue 1, Page(s) 23–36

Title translation	Water-electrolyte activity of 16-beta-methyl-prednisone.
MeSH term(s)	Adrenal Cortex Hormones/pharmacology ; Humans ; Water-Electrolyte Balance/drug effects
Chemical Substances	Adrenal Cortex Hormones
Language	Spanish
Publishing date	1966-01
Publishing country	Mexico
Document type	Journal Article
ZDB-ID	138348-6
ISSN	0034-8376
ISSN	0034-8376
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Article ; Online: Measurement of R(D) and R(D^{*}) with a Semileptonic Tagging Method.

Caria, G / Urquijo, P / Adachi, I / Aihara, H / Al Said, S / Asner, D M / Atmacan, H / Aushev, T / Babu, V / Badhrees, I / Bahinipati, S / Bakich, A M / Behera, P / Beleño, C / Bennett, J / Bhuyan, B / Bilka, T / Biswal, J / Bozek, A /

Bračko, M / Browder, T E / Campajola, M / Červenkov, D / Chang, P / Cheaib, R / Chekelian, V / Chen, A / Cheon, B G / Chilikin, K / Cho, H E / Cho, K / Choi, Y / Choudhury, S / Cinabro, D / Cunliffe, S / Dash, N / De Nardo, G / Di Capua, F / Di Carlo, S / Doležal, Z / Dong, T V / Eidelman, S / Epifanov, D / Fast, J E / Ferber, T / Ferlewicz, D / Fulsom, B G / Garg, R / Gaur, V / Gabyshev, N / Garmash, A / Giri, A / Goldenzweig, P / Greenwald, D / Grzymkowska, O / Guan, Y / Hartbrich, O / Hayasaka, K / Hayashii, H / Higuchi, T / Hou, W-S / Hsu, C-L / Iijima, T / Inami, K / Inguglia, G / Ishikawa, A / Itoh, R / Iwasaki, M / Iwasaki, Y / Jacobs, W W / Jeon, H B / Jia, S / Jin, Y / Joffe, D / Joo, K K / Kaliyar, A B / Kang, K H / Karyan, G / Kawasaki, T / Kichimi, H / Kim, C H / Kim, D Y / Kim, H J / Kim, K T / Kim, S H / Kinoshita, K / Kodyš, P / Korpar, S / Kotchetkov, D / Križan, P / Kroeger, R / Krohn, J-F / Krokovny, P / Kuhr, T / Kumar, R / Kwon, Y-J / Lange, J S / Lee, I S / Lee, J K / Lee, S C / Li, L K / Li, Y B / Li Gioi, L / Libby, J / Lieret, K / Liventsev, D / Luo, T / MacQueen, C / Masuda, M / Matsuda, T / Matvienko, D / Merola, M / Metzner, F / Miyabayashi, K / Mohanty, G B / Moon, T J / Mori, T / Mussa, R / Nakamura, K R / Nakao, M / Nath, K J / Nayak, M / Nisar, N K / Nishida, S / Nishimura, K / Ogawa, K / Ono, H / Onuki, Y / Oskin, P / Pakhlov, P / Pakhlova, G / Pal, B / Pang, T / Park, H / Park, S-H / Patra, S / Paul, S / Pedlar, T K / Pestotnik, R / Piilonen, L E / Popov, V / Prencipe, E / Prim, M T / Rabusov, A / Resmi, P K / Ritter, M / Rozanska, M / Russo, G / Sahoo, D / Sakai, Y / Sandilya, S / Santelj, L / Sanuki, T / Savinov, V / Schneider, O / Schnell, G / Schueler, J / Schwanda, C / Schwartz, A J / Seino, Y / Senyo, K / Sevior, M E / Shebalin, V / Shiu, J-G / Shwartz, B / Simon, F / Sokolov, A / Solovieva, E / Starič, M / Stottler, Z S / Sumiyoshi, T / Sutcliffe, W / Takizawa, M / Tamponi, U / Tanida, K / Tenchini, F / Trabelsi, K / Uchida, M / Uglov, T / Uno, S / Usov, Y / Vahsen, S E / Van Tonder, R / Varner, G / Varvell, K E / Vossen, A / Waheed, E / Wang, B / Wang, C H / Wang, M-Z / Wang, P / Wang, X L / Watanuki, S / Wiechczynski, J / Won, E / Yamamoto, H / Yang, S B / Ye, H / Yin, J H / Yuan, C Z / Zhang, Z P / Zhilich, V / Zhukova, V / Zhulanov, V

Physical review letters

2020 Volume 124, Issue 16, Page(s) 161803

Abstract: The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/B(B[over ¯]→Dℓ^{-}ν[over ¯]_{ℓ}) and R(D^{*})=B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}ℓ^{-}ν[over ¯]_{ℓ}), where ℓ denotes an electron or a ... ...

Abstract	The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/B(B[over ¯]→Dℓ^{-}ν[over ¯]_{ℓ}) and R(D^{})=B(B[over ¯]→D^{}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{}ℓ^{-}ν[over ¯]_{ℓ}), where ℓ denotes an electron or a muon, show a long-standing discrepancy with the standard model predictions, and might hint at a violation of lepton flavor universality. We report a new simultaneous measurement of R(D) and R(D^{}), based on a data sample containing 772×10^{6} BB[over ¯] events recorded at the ϒ(4S) resonance with the Belle detector at the KEKB e^{+}e^{-} collider. In this analysis the tag-side B meson is reconstructed in a semileptonic decay mode and the signal-side τ is reconstructed in a purely leptonic decay. The measured values are R(D)=0.307±0.037±0.016 and R(D^{})=0.283±0.018±0.014, where the first uncertainties are statistical and the second are systematic. These results are in agreement with the standard model predictions within 0.2, 1.1, and 0.8 standard deviations for R(D), R(D^{}), and their combination, respectively. This work constitutes the most precise measurements of R(D) and R(D^{*}) performed to date as well as the first result for R(D) based on a semileptonic tagging method.
Language	English
Publishing date	2020-05-08
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.124.161803
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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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Book ; Online: Studies of the semileptonic $\bar B^0\to D^{*+}\ell^-\bar\nu_\ell$ and $B^-\to D^{0}\ell^-\bar\nu_\ell$ decay processes with 34.6 fb$^{-1}$ of Belle II data

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. / 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. / Calò, 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 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. / 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. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hauth, T. / Hayasaka, K. / Hayashii, H. / Hearty, C. / Heck, M. / 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. / 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. / 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, J. B. / 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. / 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. M. / 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 / Morda, A. / 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, C. / 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. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / 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. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / 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. / Watson, I. / 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. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yuan, W. / 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.

2020

Abstract: We report measurements of the $\bar{B}^0 \to D^{*+} \ell^{-} \bar{\nu}_l$ and $B^- \to D^{0} \ell^{-} \bar{\nu}_l$ processes using 34.6 fb$^{-1}$ of collision events recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ ... ...

Abstract	We report measurements of the $\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l$ and $B^- \to D^{0} \ell^{-} \bar{\nu}_l$ processes using 34.6 fb$^{-1}$ of collision events recorded by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. For the $B^-\to D^{0}\ell^-\bar\nu_\ell$ channel, we present first studies that isolate this decay from other semileptonic processes and backgrounds. We report a measurement of the $\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l$ branching fraction and obtain ${\cal B}(\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l) = \left(4.60 \pm 0.05_{\mathrm{stat}}\pm0.17_{\mathrm{syst}} \pm 0.45_{\pi_s}\right) \%$, in agreement with the world average. Here, the uncertainties are statistical, systematic, and related to slow pion reconstruction, respectively. The systematic uncertainties are limited by the statistics of auxiliary measurements and will improve in the future. We also report differential branching fractions in five bins of the hadronic recoil parameter $w$ for $\bar{B}^0 \to D^{+} \ell^{-} \bar{\nu}_l$, unfolded to account for resolution and efficiency effects. Comment: 19 pages, 6 figures
Keywords	High Energy Physics - Experiment
Subject code	660
Publishing date	2020-08-17
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Rediscovery of $B \to \phi K^{()}$ decays and measurement of the longitudinal polarization fraction $f_L$ in $B \to \phi K^{}$ decays using the Summer 2020 Belle II dataset

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. / 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, 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 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. / 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. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hauth, T. / Hayasaka, K. / Hayashii, H. / Hearty, C. / Heck, M. / 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. / 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. / 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, J. B. / 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. / 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. M. / 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. / 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 / Morda, A. / 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, C. / 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. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rad, N. / Rados, P. / 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. / Vahsen, S. E. / van Tonder, R. / Varner, G. S. / Varvell, K. E. / Vinokurova, A. / Vitale, L. / Vorobyev, V. / Vossen, A. / 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. / Watson, I. / 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. / Yoshinobu, T. / Yuan, C. Z. / Yuan, G. / Yuan, W. / 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.

2020

Abstract: We utilize a sample of 34.6 fb$^{-1}$, collected by the Belle II experiment at the SuperKEKB asymmetric energy $e^+e^-$ collider, to search for the $B^+ \to \phi K^+$, $B^+ \to \phi K^{*+}$, $B^0 \to \phi K^0_S$, and $B^0 \to \phi K^{*0}$ decays. ... ...

Abstract	We utilize a sample of 34.6 fb$^{-1}$, collected by the Belle II experiment at the SuperKEKB asymmetric energy $e^+e^-$ collider, to search for the $B^+ \to \phi K^+$, $B^+ \to \phi K^{+}$, $B^0 \to \phi K^0_S$, and $B^0 \to \phi K^{0}$ decays. Charmless hadronic $B$ decays represent an important part of the Belle II physics program, and are an ideal benchmark to test the detector capabilities in terms of tracking efficiency, charged particle identification, vertexing, and advanced analysis techniques. Each channel is observed with a significance that exceeds 5 standard deviations, and we obtain measurements of their branching ratios that are in good agreement with the world averages. For the $B \to \phi K^*$ modes, we also perform a measurement of the longitudinal polarization fraction $f_L$. Comment: 19 pages, 6 figures
Keywords	High Energy Physics - Experiment
Subject code	612
Publishing date	2020-08-09
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\bar\nu_\ell)$ with early Belle II data

Babu, V. / Bacher, S. / Baehr, S. / Bahinipati, S. / Bakich, A. M. / Bambade, P. / Banerjee, Sw. / Bansal, S. / Barrett, M. / Bartel, W. / Batignani, G. / Baudot, J. / Beaulieu, A. / Becker, J. / Behera, P. K. / Bender, M. / Bennett, J. V. / Bernieri, E. / Bernlochner, F. U. / Bertemes, M. / 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, Y. Q. / Chen, Y. -T. / Cheon, B. G. / Chilikin, 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 Nardo, G. / De Nuccio, M. / De Pietro, G. / de Sangro, R. / Deschamps, B. / Destefanis, M. / Dey, S. / De Yta-Hernandez, 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. / 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. / Hadjivasiliou, C. / Halder, S. / Hara, K. / Hara, T. / Hartbrich, O. / Hauth, T. / Hayasaka, K. / Hayashii, H. / Hearty, C. / Heck, M. / Hedges, M. T. / de la Cruz, I. Heredia / Villanueva, M. Hernández / Hershenhorn, A. / Higuchi, T. / Hill, E. C. / Hirata, H. / Hirose, S. / Hoek, M. / Hohmann, M. / Hollitt, S. / Hotta, T. / Hsu, C. -L. / Hu, Y. / Huang, K. / 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. / Kadenko, I. / Kahn, J. / Kakuno, H. / Kaliyar, A. B. / Kandra, J. / Kang, K. H. / Kapusta, P. / 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, J. B. / 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. / Koirala, S. / Komarov, I. / Konno, T. / Korpar, S. / Kovalchuk, N. / Kraetzschmar, T. M. G. / 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. M. / 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. / 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 / Morda, A. / Morii, T. / Moser, H. -G. / Mrvar, M. / Mueller, F. / Müller, F. J. / Muller, Th. / Muroyama, G. / Mussa, R. / Nakagiri, K. / Nakamura, I. / Nakamura, K. R. / Nakano, E. / Nakao, M. / Nakayama, H. / Nakazawa, H. / Nanut, T. / Natkaniec, Z. / 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. / Park, C. / 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. / Popov, V. / Praz, C. / Prencipe, E. / Prim, M. T. / Purohit, M. V. / Rados, P. / 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. / Rummel, S. / 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. / 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. 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2020

Abstract: We measure the branching fractions for the decays $\bar{B}^0 \to D^{*+} e^{-} \bar{\nu}_e$ and $\bar{B}^0 \to D^{*+} \mu^{-} \bar{\nu}_\mu$ using $8.70 \pm 0.09~{\rm fb}^{-1}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric- ... ...

Abstract	We measure the branching fractions for the decays $\bar{B}^0 \to D^{+} e^{-} \bar{\nu}_e$ and $\bar{B}^0 \to D^{+} \mu^{-} \bar{\nu}_\mu$ using $8.70 \pm 0.09~{\rm fb}^{-1}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. Candidate signal decays are reconstructed with the subsequent decays $D^{+}\to D^0 \pi^+$ and $D^0\to K^-\pi^+$. We obtain the results ${\cal B}(\bar{B}^0 \to D^{+} e^{-} \bar{\nu}_e)$ = $(4.55\pm0.14(\mathrm{stat})\pm0.35 (\mathrm{syst})) \%$ and ${\cal B}(\bar{B}^0 \to D^{*+} \mu^{-} \bar{\nu}_\mu)$ = $(4.84\pm 0.13(\mathrm{stat})\pm0.37(\mathrm{syst})) \%$, in agreement with the world averages. The measurements serve to validate the full chain of detector operation and calibration, data collection and processing, and production of physics results in the case of semileptonic $B$-meson decays. Comment: 17 pages, 2 figures, minor correction added
Keywords	High Energy Physics - Experiment
Subject code	660
Publishing date	2020-04-20
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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