期刊
PHYSICAL REVIEW D
卷 94, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.94.072007
关键词
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资金
- 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, 11575017]
- 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
- Excellence Cluster Universe
- 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, 2015H1A2A 1033649]
- Basic Research Lab program under NRF [KRF-2011-0020333]
- Center for Korean J-PARC Users [NRF-2013K1A3A7A06056592]
- Brain Korea 21-Plus program and 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, Basque Foundation for Science
- Euskal Herriko Unibertsitatea (UPV/EHU) under program UFI (spain) [11/55]
- Swiss National Science Foundation
- Ministry of Education and the Ministry of Science and Technology of Taiwan
- U.S. Department of Energy
- National Science Foundation
- MEXT for Science Research in a Priority Area (New Development of Flavor Physics)
- SPS for Creative Scientific Research (Evolution of Tau-lepton Physics)
- [13J03438]
- [26220706]
- Grants-in-Aid for Scientific Research [26220706] Funding Source: KAKEN
- National Research Foundation of Korea [2013R1A1A3007772] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report a measurement of the ratio R(D*) = B((B) over bar (0) -> D*(+)tau(-)(nu) over bar (tau))/B((B) over bar (0) -> D*(+)l(-)(nu) over bar (l))where l denotes an electron or a muon. The results are based on a data sample containing 772 x 10(6) B (B) over bar pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We select a sample of B-0(B) over bar (0) pairs by reconstructing both B mesons in semileptonic decays to D*(-/+)l(+/-). We measure R(D*) = 0.302 +/- 0.030(stat) +/- 0.011(syst), which is within 1.6 sigma of the Standard Model theoretical expectation, where the standard deviation sigma includes systematic uncertainties. We use this measurement to constrain several scenarios of new physics in a model-independent approach.
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