期刊
PHYSICAL REVIEW D
卷 93, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.93.032006
关键词
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资金
- Mainz Institute for Theoretical Physics
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
- Japan Society for the Promotion of Science (JSPS)
- Tau-Lepton Physics Research Center of Nagoya University
- Australian Research Council
- Austrian Science Fund [P 22742-N16, P 26794-N20]
- National Natural Science Foundation of China [10575109, 10775142, 10875115, 11175187, 11475187]
- Chinese Academy of Science Center for Excellence in Particle Physics
- Ministry of Education, Youth and Sports of the Czech Republic [LG14034]
- Carl Zeiss Foundation
- Deutsche Forschungsgemeinschaft
- VolkswagenStiftung
- Department of Science and Technology of India
- Istituto Nazionale di Fisica Nucleare of Italy
- WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea [2011-0029457, 2012-0008143, 2012R1A1A2008330, 2013R1A1A3007772, 2014R1A2A2A01005286, 2014R1A2A2A01002734, 2015R1A2A2A01003280, 2015H1A2A1033649]
- Basic Research Lab program under NRF [KRF-2011-0020333]
- Center for Korean J-PARC Users [NRF-2013K1A3A7A06056592]
- Brain Korea 21-Plus program
- Radiation Science Research Institute
- Polish Ministry of Science and Higher Education
- National Science Center
- Ministry of Education and Science of the Russian Federation
- Russian Foundation for Basic Research
- Slovenian Research Agency
- Ikerbasque (Spain)
- Basque Foundation for Science (Spain)
- Euskal Herriko Unibertsitatea (UPV/EHU) (Spain) [UFI 11/55]
- Swiss National Science Foundation
- National Science Council
- Ministry of Education of Taiwan
- U.S. Department of Energy
- National Science Foundation
- MEXT
- JSPS
We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar using the decay B -> Dl nu(l) (l = e,mu) based on 711 fb(-1) of e(+)e(-) -> Upsilon(4S) data recorded by the Belle detector and containing 772 x 10(6) B (B) over bar pairs. One B meson in the event is fully reconstructed in a hadronic decay mode, while the other, on the signal side, is partially reconstructed from a charged lepton and either a D+ or D-0 meson in a total of 23 hadronic decay modes. The isospin-averaged branching fraction of the decay B -> Dl nu(l) is found to be B(B-0 -> D(-)l(vertical bar)nu(l)) = (2.31 +/- 0.03(stat) +/- 0.11(syst))%. Analyzing the differential decay rate as a function of the hadronic recoil with the parametrization of Caprini, Lellouch, and Neubert and using the form-factor prediction G(1) = 1.0541 +/- 0.0083 calculated by FNAL/MILC, we obtain eta(EW)vertical bar V-cb vertical bar = (40.12 +/- 1.34) x 10(-3), where eta(EW) is the electroweak correction factor. Alternatively, assuming the model-independent form-factor parametrization of Boyd, Grinstein, and Lebed and using lattice QCD data from the FNAL/MILC and HPQCD collaborations, we find eta(EW)vertical bar V-cb vertical bar = (41.10 +/- 1.14) x 10(-3).
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