skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Observation of B{sup -}{yields}p{Lambda}D{sup 0} at Belle

Abstract

We study B{sup -} meson decays to p{Lambda}D{sup (*)0} final states using a sample of 657x10{sup 6}BB events collected at the {Upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. The observed branching fraction for B{sup -}{yields}p{Lambda}D{sup 0} is (1.43{sub -0.25}{sup +0.28}{+-}0.18)x10{sup -5} with a significance of 8.1 standard deviations, where the uncertainties are statistical and systematic, respectively. Most of the signal events have the p{Lambda} mass peaking near threshold. No significant signal is observed for B{sup -}{yields}p{Lambda}D{sup *0} and the corresponding upper limit on the branching fraction is 4.8x10{sup -5} at the 90% confidence level.

Authors:
; ; ; ; ; ; ;  [1]; ; ; ; ; ; ; ; ; ; ; ;  [2]
  1. Department of Physics, National Taiwan University, Taipei (China)
  2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
Publication Date:
OSTI Identifier:
21607737
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 84; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.84.071501; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B MINUS MESONS; BRANCHING RATIO; D NEUTRAL MESONS; ELECTRONS; KEK LINAC; LAMBDA BARYONS; MASS; PARTICLE DECAY; POSITRONS; PROTONS; RESONANCE; VECTOR MESONS; ACCELERATORS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; B MESONS; BARYONS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; CHARM PARTICLES; CHARMED MESONS; D MESONS; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HYPERONS; LEPTONS; LINEAR ACCELERATORS; MATTER; MESONS; NUCLEONS; PSEUDOSCALAR MESONS; STRANGE PARTICLES

Citation Formats

Chen, P., Wang, M.-Z., Chang, P., Chao, Y., Hou, W.-S., Hsiung, Y. B., Liu, Y., Shiu, J.-G., Adachi, I., Haba, J., Hara, T., Itoh, R., Iwasaki, Y., Katayama, N., Kichimi, H., Nakao, M., Nishida, S., Sakai, Y., Uehara, S., and Uno, S. Observation of B{sup -}{yields}p{Lambda}D{sup 0} at Belle. United States: N. p., 2011. Web. doi:10.1103/PHYSREVD.84.071501.
Chen, P., Wang, M.-Z., Chang, P., Chao, Y., Hou, W.-S., Hsiung, Y. B., Liu, Y., Shiu, J.-G., Adachi, I., Haba, J., Hara, T., Itoh, R., Iwasaki, Y., Katayama, N., Kichimi, H., Nakao, M., Nishida, S., Sakai, Y., Uehara, S., & Uno, S. Observation of B{sup -}{yields}p{Lambda}D{sup 0} at Belle. United States. doi:10.1103/PHYSREVD.84.071501.
Chen, P., Wang, M.-Z., Chang, P., Chao, Y., Hou, W.-S., Hsiung, Y. B., Liu, Y., Shiu, J.-G., Adachi, I., Haba, J., Hara, T., Itoh, R., Iwasaki, Y., Katayama, N., Kichimi, H., Nakao, M., Nishida, S., Sakai, Y., Uehara, S., and Uno, S. Sat . "Observation of B{sup -}{yields}p{Lambda}D{sup 0} at Belle". United States. doi:10.1103/PHYSREVD.84.071501.
@article{osti_21607737,
title = {Observation of B{sup -}{yields}p{Lambda}D{sup 0} at Belle},
author = {Chen, P. and Wang, M.-Z. and Chang, P. and Chao, Y. and Hou, W.-S. and Hsiung, Y. B. and Liu, Y. and Shiu, J.-G. and Adachi, I. and Haba, J. and Hara, T. and Itoh, R. and Iwasaki, Y. and Katayama, N. and Kichimi, H. and Nakao, M. and Nishida, S. and Sakai, Y. and Uehara, S. and Uno, S.},
abstractNote = {We study B{sup -} meson decays to p{Lambda}D{sup (*)0} final states using a sample of 657x10{sup 6}BB events collected at the {Upsilon}(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. The observed branching fraction for B{sup -}{yields}p{Lambda}D{sup 0} is (1.43{sub -0.25}{sup +0.28}{+-}0.18)x10{sup -5} with a significance of 8.1 standard deviations, where the uncertainties are statistical and systematic, respectively. Most of the signal events have the p{Lambda} mass peaking near threshold. No significant signal is observed for B{sup -}{yields}p{Lambda}D{sup *0} and the corresponding upper limit on the branching fraction is 4.8x10{sup -5} at the 90% confidence level.},
doi = {10.1103/PHYSREVD.84.071501},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 84,
place = {United States},
year = {2011},
month = {10}
}