期刊
PHYSICAL REVIEW LETTERS
卷 100, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.100.151802
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资金
- STFC [PP/E000495/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E000444/1] Funding Source: researchfish
We report a measurement of the branching fractions for (B) over bar -> D-(*)(pi)center dot(-)(nu) over bar (center dot) decays based on 341.1 fb(-1) of data collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II e(+)e(-) storage rings. Events are tagged by fully reconstructing one of the B mesons in a hadronic decay mode. We obtain B(B--> D-0 center dot(-)(nu) over bar (center dot))=(2.33 +/- 0.09(stat)+/- 0.09(syst))%, B(B--> D-*0 center dot(-)(nu) over bar (center dot))=(5.83 +/- 0.15(stat)+/- 0.30(syst))%, B((nu) over bar (0)-> D+center dot(-)(nu) over bar (center dot))=(2.21 +/- 0.11(stat)+/- 0.12(syst))%, B((nu) over bar (0)-> D*+center dot(-)(nu) over bar (center dot))=(5.49 +/- 0.16(stat)+/- 0.25(syst))%, B(B--> D+pi(-)center dot(-)(nu) over bar (center dot))=(0.42 +/- 0.06(stat)+/- 0.03(syst))%, B(B--> D*+pi(-)center dot(-)(nu) over bar (center dot))=(0.59 +/- 0.05(stat)+/- 0.04(syst))%, B((nu) over bar (0)-> D-0 pi(+)center dot(-)(nu) over bar (center dot))=(0.43 +/- 0.08(stat)+/- 0.03(syst))%, and B((nu) over bar (0)-> D-*0 pi(+)center dot(-)(nu) over bar (center dot))=(0.48 +/- 0.08(stat)+/- 0.04(syst))%.
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