Study of B+→pΛ̄γ, pΛ̄π0 and B0→pΛ̄π-

M. Z. Wang, Y. J. Lee, K. Abe, I. Adachi, H. Aihara, D. Anipko, T. Aushev, S. Bahinipati, A. M. Bakich, I. Bedny, K. Belous, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, T. E. Browder, M. C. Chang, Y. Chao, A. Chen, K. F. ChenW. T. Chen, B. G. Cheon, R. Chistov, I. S. Cho, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Dash, S. Eidelman, S. Fratina, G. Gokhroo, H. Ha, J. Haba, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, N. Joshi, D. H. Kah, J. H. Kang, N. Katayama, T. Kawasaki, H. Kichimi, Y. J. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, Y. J. Kwon, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, M. Nakao, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, O. Schneider, J. Schümann, A. J. Schwartz, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, A. Sokolov, A. Somov, N. Soni, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, X. C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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Abstract

We study the following charmless baryonic three-body decays of B mesons: B+→pΛ̄γ, B+→pΛ̄π0, and B0→pΛ̄π-. 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+→pΛ̄π0, which is measured to have a branching fraction of (3.00-0.53+0.61±0.33)×10-6. We also set upper limits on branching fractions of the two-body decays B0→pΣ̄ *-, B0→Δ0Λ̄, B+→pΣ̄*0, and B+→Δ+Λ̄ at the 90% confidence level. These results are obtained from a 414fb-1 data sample collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.

Original languageEnglish
Article number052004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number5
DOIs
Publication statusPublished - 2007 Sep 21

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Wang, M. Z., Lee, Y. J., Abe, K., Adachi, I., Aihara, H., Anipko, D., Aushev, T., Bahinipati, S., Bakich, A. M., Bedny, I., Belous, K., Bizjak, I., Blyth, S., Bondar, A., Bračko, M., Browder, T. E., Chang, M. C., Chao, Y., Chen, A., ... Zupanc, A. (2007). Study of B+→pΛ̄γ, pΛ̄π0 and B0→pΛ̄π-. Physical Review D - Particles, Fields, Gravitation and Cosmology, 76(5), [052004]. https://doi.org/10.1103/PhysRevD.76.052004