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  1. Article ; Online: Deregulated expression of circular RNAs in acute myeloid leukemia.

    Lux, Susanne / Blätte, Tamara J / Gillissen, Bernhard / Richter, Antje / Cocciardi, Sibylle / Skambraks, Sabrina / Schwarz, Klaus / Schrezenmeier, Hubert / Döhner, Hartmut / Döhner, Konstanze / Dolnik, Anna / Bullinger, Lars

    Blood advances

    2021  Volume 5, Issue 5, Page(s) 1490–1503

    Abstract: Circular RNAs (circRNAs) are dynamically regulated during differentiation and show cell type-specific expression, which is altered in cancer and can have a direct impact on its various hallmarks. We hypothesized that circRNA expression is deregulated in ... ...

    Abstract Circular RNAs (circRNAs) are dynamically regulated during differentiation and show cell type-specific expression, which is altered in cancer and can have a direct impact on its various hallmarks. We hypothesized that circRNA expression is deregulated in acute myeloid leukemia (AML) and that circRNA candidates might contribute to the pathogenesis of the disease. To identify leukemia-associated and differentiation-independent changes in circRNA expression, we determined the circular RNAome of 61 AML patients and 16 healthy hematopoietic stem and progenitor cell (HSPC) samples using ribosomal RNA-depleted RNA sequencing. We found hundreds of circRNAs that were differentially expressed between AML and healthy HSPCs. Gene set analysis found that many of these circRNAs were transcribed from genes implicated in leukemia biology. We discovered a circRNA derived from the T-cell transcription factor gene B cell CLL/lymphoma 11B, circBCL11B, which was exclusively expressed in AML patients, but not detected in healthy HSPCs, and associated with a T-cell-like gene expression signature. We were able to validate this finding in an independent cohort of 332 AML patients. Knockdown of circBCL11B had a negative effect on leukemic cell proliferation and resulted in increased cell death of leukemic cells, thereby suggesting circBCL11B as a novel functionally relevant candidate in AML pathogenesis. In summary, our study enables comprehensive insights into circRNA expression changes upon leukemic transformation and provides valuable information on the biology of leukemic cells and potential novel pathway dependencies that are relevant for AML therapy.
    MeSH term(s) Cell Proliferation ; Humans ; Leukemia, Myeloid, Acute/genetics ; MicroRNAs ; RNA, Circular ; Transcriptome
    Chemical Substances MicroRNAs ; RNA, Circular
    Language English
    Publishing date 2021-03-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2915908-8
    ISSN 2473-9537 ; 2473-9529
    ISSN (online) 2473-9537
    ISSN 2473-9529
    DOI 10.1182/bloodadvances.2020003230
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: getITD for FLT3-ITD-based MRD monitoring in AML.

    Blätte, Tamara J / Schmalbrock, Laura K / Skambraks, Sabrina / Lux, Susanne / Cocciardi, Sibylle / Dolnik, Anna / Döhner, Hartmut / Döhner, Konstanze / Bullinger, Lars

    Leukemia

    2019  Volume 33, Issue 10, Page(s) 2535–2539

    MeSH term(s) Base Sequence ; Cell Line, Tumor ; Female ; Gene Frequency/genetics ; HL-60 Cells ; Humans ; Leukemia, Myeloid, Acute/genetics ; Male ; Mutation/genetics ; Neoplasm, Residual/genetics ; fms-Like Tyrosine Kinase 3/genetics
    Chemical Substances FLT3 protein, human (EC 2.7.10.1) ; fms-Like Tyrosine Kinase 3 (EC 2.7.10.1)
    Language English
    Publishing date 2019-05-14
    Publishing country England
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 807030-1
    ISSN 1476-5551 ; 0887-6924
    ISSN (online) 1476-5551
    ISSN 0887-6924
    DOI 10.1038/s41375-019-0483-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Clonal evolution of acute myeloid leukemia with FLT3-ITD mutation under treatment with midostaurin.

    Schmalbrock, Laura K / Dolnik, Anna / Cocciardi, Sibylle / Sträng, Eric / Theis, Frauke / Jahn, Nikolaus / Panina, Ekaterina / Blätte, Tamara J / Herzig, Julia / Skambraks, Sabrina / Rücker, Frank G / Gaidzik, Verena I / Paschka, Peter / Fiedler, Walter / Salih, Helmut R / Wulf, Gerald / Schroeder, Thomas / Lübbert, Michael / Schlenk, Richard F /
    Thol, Felicitas / Heuser, Michael / Larson, Richard A / Ganser, Arnold / Stunnenberg, Hendrik G / Minucci, Saverio / Stone, Richard M / Bloomfield, Clara D / Döhner, Hartmut / Döhner, Konstanze / Bullinger, Lars

    Blood

    2021  Volume 137, Issue 22, Page(s) 3093–3104

    Abstract: In the international randomized phase 3 RATIFY (Randomized AML Trial In FLT3 in patients less than 60 Years old) trial, the multikinase inhibitor midostaurin significantly improved overall and event-free survival in patients 18 to 59 years of age with ... ...

    Abstract In the international randomized phase 3 RATIFY (Randomized AML Trial In FLT3 in patients less than 60 Years old) trial, the multikinase inhibitor midostaurin significantly improved overall and event-free survival in patients 18 to 59 years of age with FLT3-mutated acute myeloid leukemia (AML). However, only 59% of patients in the midostaurin arm achieved protocol-specified complete remission (CR), and almost half of patients achieving CR relapsed. To explore underlying mechanisms of resistance, we studied patterns of clonal evolution in patients with FLT3-internal tandem duplications (ITD)-positive AML who were entered in the RATIFY or German-Austrian Acute Myeloid Leukemia Study Group 16-10 trial and received treatment with midostaurin. To this end, paired samples from 54 patients obtained at time of diagnosis and at time of either relapsed or refractory disease were analyzed using conventional Genescan-based testing for FLT3-ITD and whole exome sequencing. At the time of disease resistance or progression, almost half of the patients (46%) became FLT3-ITD negative but acquired mutations in signaling pathways (eg, MAPK), thereby providing a new proliferative advantage. In cases with FLT3-ITD persistence, the selection of resistant ITD clones was found in 11% as potential drivers of disease. In 32% of cases, no FLT3-ITD mutational change was observed, suggesting either resistance mechanisms bypassing FLT3 inhibition or loss of midostaurin inhibitory activity because of inadequate drug levels. In summary, our study provides novel insights into the clonal evolution and resistance mechanisms of FLT3-ITD-mutated AML under treatment with midostaurin in combination with intensive chemotherapy.
    MeSH term(s) Adolescent ; Adult ; Aged ; Clonal Evolution/drug effects ; Clonal Evolution/genetics ; Female ; Humans ; Leukemia, Myeloid, Acute/drug therapy ; Leukemia, Myeloid, Acute/genetics ; Leukemia, Myeloid, Acute/metabolism ; Male ; Middle Aged ; Mutation ; Staurosporine/administration & dosage ; Staurosporine/analogs & derivatives ; Tandem Repeat Sequences ; Whole Exome Sequencing ; fms-Like Tyrosine Kinase 3/genetics ; fms-Like Tyrosine Kinase 3/metabolism
    Chemical Substances FLT3 protein, human (EC 2.7.10.1) ; fms-Like Tyrosine Kinase 3 (EC 2.7.10.1) ; Staurosporine (H88EPA0A3N) ; midostaurin (ID912S5VON)
    Language English
    Publishing date 2021-02-18
    Publishing country United States
    Document type Clinical Trial ; Journal Article ; Multicenter Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 80069-7
    ISSN 1528-0020 ; 0006-4971
    ISSN (online) 1528-0020
    ISSN 0006-4971
    DOI 10.1182/blood.2020007626
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Clonal evolution patterns in acute myeloid leukemia with NPM1 mutation.

    Cocciardi, Sibylle / Dolnik, Anna / Kapp-Schwoerer, Silke / Rücker, Frank G / Lux, Susanne / Blätte, Tamara J / Skambraks, Sabrina / Krönke, Jan / Heidel, Florian H / Schnöder, Tina M / Corbacioglu, Andrea / Gaidzik, Verena I / Paschka, Peter / Teleanu, Veronica / Göhring, Gudrun / Thol, Felicitas / Heuser, Michael / Ganser, Arnold / Weber, Daniela /
    Sträng, Eric / Kestler, Hans A / Döhner, Hartmut / Bullinger, Lars / Döhner, Konstanze

    Nature communications

    2019  Volume 10, Issue 1, Page(s) 2031

    Abstract: Mutations in the nucleophosmin 1 (NPM1) gene are considered founder mutations in the pathogenesis of acute myeloid leukemia (AML). To characterize the genetic composition of NPM1 mutated ( ... ...

    Abstract Mutations in the nucleophosmin 1 (NPM1) gene are considered founder mutations in the pathogenesis of acute myeloid leukemia (AML). To characterize the genetic composition of NPM1 mutated (NPM1
    MeSH term(s) Adult ; Aged ; Clonal Evolution ; DNA Mutational Analysis ; Female ; Humans ; Leukemia, Myeloid, Acute/genetics ; Leukemia, Myeloid, Acute/pathology ; Male ; Middle Aged ; Mutation ; Neoplasm Recurrence, Local/genetics ; Neoplasm Recurrence, Local/pathology ; Neoplasms, Second Primary/genetics ; Neoplasms, Second Primary/pathology ; Nuclear Proteins/genetics ; Whole Exome Sequencing
    Chemical Substances Nuclear Proteins ; nucleophosmin (117896-08-9)
    Language English
    Publishing date 2019-05-02
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-019-09745-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. 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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  6. 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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  7. 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

    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. / 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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  8. 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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  9. Book ; Online: Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\bar\nu_\ell)$ with early 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. / 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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