Study of B{sup +}{yields}p{lambda}{gamma}, p{lambda}{pi}{sup 0} and B{sup 0}{yields}p{lambda}{pi}{sup -}

Journal Article · Sat Sep 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.052004· OSTI ID:21027672

Wang, M -Z; Lee, Y -J; Chao, Y; Chen, K -F; Hou, W -S; Hsiung, Y B; Lin, S -W; Ueno, K ^[1]; Abe, K; Hoshi, Y ^[2]; Adachi, I; Haba, J; Hazumi, M; Itoh, R; Iwasaki, Y; Katayama, N; Kichimi, H; Krokovny, P; Nakao, M; Nishida, S ^[3]

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1. Department of Physics, National Taiwan University, Taipei (China)
2. Tohoku Gakuin University, Tagajo (Japan)
3. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

We study the following charmless baryonic three-body decays of B mesons: B{sup +}{yields}p{lambda}{gamma}, B{sup +}{yields}p{lambda}{pi}{sup 0}, and B{sup 0}{yields}p{lambda}{pi}{sup -}. The partial branching fractions as a function of the baryon-antibaryon mass and the polar angle distributions of the proton in the baryon-antibaryon system are presented. This study includes the first observation of B{sup +}{yields}p{lambda}{pi}{sup 0}, which is measured to have a branching fraction of (3.00{sub -0.53}{sup +0.61}{+-}0.33)x10{sup -6}. We also set upper limits on branching fractions of the two-body decays B{sup 0}{yields}p{sigma}*{sup -}, B{sup 0}{yields}{delta}{sup 0}{lambda}, B{sup +}{yields}p{sigma}*{sup 0}, and B{sup +}{yields}{delta}{sup +}{lambda} at the 90% confidence level. These results are obtained from a 414 fb{sup -1} data sample collected near the {upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider.

• OSTI ID: 21027672
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIBARYONS
ASYMMETRY
B NEUTRAL MESONS
B PLUS MESONS
BRANCHING RATIO
DISTRIBUTION
ELECTRON-POSITRON INTERACTIONS
ELECTRONS
HADRONIC PARTICLE DECAY
LAMBDA BARYONS
PHOTONS
PIONS MINUS
PIONS NEUTRAL
POSITRONS
PROTONS
REST MASS
THREE-BODY PROBLEM
TWO-BODY PROBLEM
UPSILON-10580 MESONS