Measurement of the branching fractions for B{sup -}{yields}D{sup (*)+}{pi}{sup -}l{sup -}{nu}{sub l} and B{sup 0}{yields}D{sup (*)0}{pi}{sup +}l{sup -}{nu}{sub l}

Journal Article · Thu Sep 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.051109· OSTI ID:20711401

Liventsev, D; Aushev, T; Balagura, V; Chistov, R; Mizuk, R; Pakhlov, P; Uglov, T ^[1]; Matsumoto, T; Sumiyoshi, T ^[2]; Abe, K; Gershon, T; Haba, J; Hazumi, M; Ishikawa, A; Itoh, R; Kichimi, H; Nakao, M; Nishida, S; Nozaki, T; Ozaki, H ^[3]

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1. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
2. Tokyo Metropolitan University, Tokyo (Japan)
3. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); and others

We report on a measurement of the branching fractions for B{sup -}{yields}D{sup (}*{sup )+}{pi}{sup -}l{sup -}{nu}{sub l} and B{sup 0}{yields}D{sup (}*{sup )0}{pi}{sup +}l{sup -}{nu}{sub l} with 275x10{sup 6} BB events collected at the {upsilon}(4S) resonance with the Belle detector at KEKB. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We obtain B(B{sup -}{yields}D{sup +}{pi}{sup -}l{sup -}{nu}{sub l})=(0.54{+-}0.07(stat){+-}0.07(syst){+-}0.06(BR))x10= {sup -2}, B(B{sup -}{yields}D*{sup +}{pi}{sup -}l{sup -}{nu}{sub l})=(0.67{+-}0.11(stat){+-}0.09(syst){+-}0.03(BR))x1= 0{sup -2}, B(B{sup 0}{yields}D{sup 0}{pi}{sup +}l{sup -}{nu}{sub l})=(0.33{+-}0.06(stat){+-}0.06(syst){+-}0.03(BR))x10= {sup -2}, B(B{sup 0}{yields}D*{sup 0}{pi}{sup +}l{sup -}{nu}{sub l})=(0.65{+-}0.12(stat){+-}0.08(syst){+-}0.05(BR))x1= 0{sup -2}, where the third error comes from the error on B{yields}D{sup (}*{sup )}l{sup -}{nu}{sub l} decays. Contributions from B{sup 0}{yields}D*{sup +}l{sup -}{nu}{sub l} decays are excluded in the measurement of B{sup 0}{yields}D{sup 0}{pi}{sup +}l{sup -}{nu}{sub l}.

• OSTI ID: 20711401
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MINUS MESONS
B NEUTRAL MESONS
BRANCHING RATIO
D NEUTRAL MESONS
D*-2010 MESONS
ERRORS
NEUTRINOS
PIONS MINUS
SEMILEPTONIC DECAY
UPSILON-10580 MESONS