期刊
PHYSICAL REVIEW D
卷 83, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.83.071101
关键词
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资金
- MEXT
- JSPS
- Nagoya's TLPRC (Japan)
- ARC
- DIISR (Australia)
- NSFC (China)
- MSMT (Czechia)
- DST (India)
- MEST
- NRF
- NSDC of KISTI
- WCU (Korea)
- MNiSW (Poland)
- MES
- RFAAE (Russia)
- ARRS (Slovenia)
- SNSF (Switzerland)
- NSC
- MOE (Taiwan)
- DOE (USA)
- NRF [2009-0071072]
- National Research Foundation of Korea [R32-2011-000-10155-0, R32-2011-000-20001-0, R11-2000-077-01003-0, 2009-0071072] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We present a measurement of the charmless semileptonic decay B-0 -> pi(-) l(+) nu using a data sample containing 657 x 10(6) B (B) over bar events collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating near the Y(4S) resonance. We determine the total branching fraction of the decay, B(B-0 -> pi(-) l(+) nu) = (1.49 +/- 0.04(stat) +/- 0.07(syst)) x 10(-)4. We also report a new precise measurement of the differential decay rate and extract the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar using model-independent and model-dependent approaches. From a simultaneous fit to the measured differential decay rate and lattice QCD results, we obtain vertical bar V-ub vertical bar (3.43 +/- 0: 33) x 10(-3), where the error includes both experimental and theoretical uncertainties.
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