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

Publication ,  Journal Article
Collaboration, BII; Abudinén, F; Adachi, I; Adak, R; Adamczyk, K; Ahlburg, P; Ahn, JK; Aihara, H; Akopov, N; Aloisio, A; Ameli, F; Andricek, L ...
April 20, 2020

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.

Duke Scholars

Publication Date

April 20, 2020
 

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Collaboration, B. I. I., Abudinén, F., Adachi, I., Adak, R., Adamczyk, K., Ahlburg, P., … Watanuki, S. (2020). Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\barν_\ell)$ with early Belle II data.
Collaboration, Belle I. I., F. Abudinén, I. Adachi, R. Adak, K. Adamczyk, P. Ahlburg, J. K. Ahn, et al. “Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\barν_\ell)$ with early Belle II data,” April 20, 2020.
Collaboration BII, Abudinén F, Adachi I, Adak R, Adamczyk K, Ahlburg P, et al. Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\barν_\ell)$ with early Belle II data. 2020 Apr 20;
Collaboration BII, Abudinén F, Adachi I, Adak R, Adamczyk K, Ahlburg P, Ahn JK, Aihara H, Akopov N, Aloisio A, Ameli F, Andricek L, Ky NA, Asner DM, Atmacan H, Aulchenko V, Aushev T, Aushev V, Aziz T, Babu V, Bacher S, Baehr S, Bahinipati S, Bakich AM, Bambade P, Banerjee S, Bansal S, Barrett M, Bartel W, Batignani G, Baudot J, Beaulieu A, Becker J, Behera PK, Bender M, Bennett JV, Bernieri E, Bernlochner FU, 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 RA, Browder TE, Brown DN, 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 YQ, Chen Y-T, Cheon BG, Chilikin K, Cho H-E, Cho K, Cho S-J, Choi S-K, Choudhury S, Cinabro D, Corona L, Cremaldi LM, Cuesta D, Cunliffe S, Czank T, Dash N, Dattola F, Cruz-Burelo EDL, Nardo GD, Nuccio MD, Pietro GD, Sangro RD, Deschamps B, Destefanis M, Dey S, Yta-Hernandez AD, Capua FD, Carlo SD, Dingfelder J, Doležal Z, Jiménez ID, Dong TV, Dort K, Dossett D, Dubey S, Duell S, Dujany G, Eidelman S, Eliachevitch M, Epifanov D, Fast JE, Ferber T, Ferlewicz D, Finocchiaro G, Fiore S, Fischer P, Fodor A, Forti F, Frey A, Friedl M, Fulsom BG, 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 MT, Cruz IHDL, Villanueva MH, Hershenhorn A, Higuchi T, Hill EC, 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 JI, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Iwata S, Jackson P, Jacobs WW, Jaegle I, Jaffe DE, Jang E-J, Jeandron M, Jeon HB, Jia S, Jin Y, Joo C, Joo KK, Kadenko I, Kahn J, Kakuno H, Kaliyar AB, Kandra J, Kang KH, Kapusta P, Karyan G, Kato Y, Kawai H, Kawasaki T, Keck T, Ketter C, Kichimi H, Kiesling C, Kim BH, Kim C-H, Kim DY, Kim HJ, Kim JB, Kim K-H, Kim K, Kim S-H, Kim Y-K, Kim Y, Kimmel TD, 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 TMG, Križan P, Kroeger R, Krohn JF, 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, Licata CL, Lalwani K, Lanceri L, Lange JS, Lautenbach K, Laycock PJ, Diberder FRL, Lee I-S, Lee SC, Leitl P, Levit D, Lewis PM, Li C, Li LK, Li SX, Li YM, Li YB, Libby J, Lieret K, Gioi LL, Lin J, Liptak Z, Liu QY, Liu ZA, 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 JC, Meier F, Merola M, Metzner F, Milesi M, Miller C, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Azmi K, Mohanty GB, Moon H, Moon T, Grimaldo JAM, Morda A, Morii T, Moser H-G, Mrvar M, Mueller F, Müller FJ, Muller T, Muroyama G, Mussa R, Nakagiri K, Nakamura I, Nakamura KR, 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 NK, Nishida S, Nishimura K, Nishimura M, Nouxman MHA, Oberhof B, Ogawa K, Ogawa S, Olsen SL, Onishchuk Y, Ono H, Onuki Y, Oskin P, Oxford ER, 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 TK, Peruzzi I, Peschke R, Pestotnik R, Piccolo M, Piilonen LE, Podesta-Lerma PLM, Popov V, Praz C, Prencipe E, Prim MT, Purohit MV, Rados P, Rasheed R, Reif M, Reiter S, Remnev M, Resmi PK, Ripp-Baudot I, Ritter M, Ritzert M, Rizzo G, Rizzuto LB, Robertson SH, Pérez DR, Roney JM, Rosenfeld C, Rostomyan A, Rout N, Rozanska M, Rummel S, Russo G, Sahoo D, Sakai Y, Sanders DA, 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 AJ, Schwenker B, Seddon RM, Seino Y, Selce A, Senyo K, Seong IS, Sevior ME, Sfienti C, Shebalin V, Shen CP, Shibuya H, Shiu J-G, Shwartz B, Sibidanov A, Simon F, Singh JB, Skambraks S, Smith K, Sobie RJ, Soffer A, Sokolov A, Soloviev Y, Solovieva E, Spataro S, Spruck B, Starič M, Stefkova S, Stottler ZS, Stroili R, Strube J, Stypula J, Sumihama M, Sumisawa K, Sumiyoshi T, Summers DJ, Sutcliffe W, Suzuki K, Suzuki SY, 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 SE, Tonder RV, Varner GS, Varvell KE, Vinokurova A, Vitale L, Vorobyev V, Vossen A, Waheed E, Wakeling HM, Wan K, Abdullah WW, Wang B, Wang CH, Wang M-Z, Wang XL, Warburton A, Watanabe M, Watanuki S. Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\barν_\ell)$ with early Belle II data. 2020 Apr 20;

Publication Date

April 20, 2020