Search for B0→pp̄, ΛΛ̄ and B+→pΛ̄ at Belle

Y. T. Tsai, P. Chang, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, U. Bitenc, I. Bizjak, S. Blyth, M. Bračko, T. E. Browder, M. C. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, S. ColeJ. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, H. Ha, J. Haba, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, H. Kawai, H. Kichimi, H. J. Kim, H. O. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, M. J. Lee, Y. J. Lee, T. Lesiak, A. Limosani, S. W. Lin, D. Liventsev, T. Matsumoto, S. McOnie, T. Medvedeva, W. Mitaroff, H. Miyata, Y. Miyazaki, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, S. Uehara, K. Ueno, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, S. Villa, A. Vinokurova, C. H. Wang, M. Z. Wang, Y. Watanabe, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, V. Zhilich, V. Zhulanov, A. Zupanc

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We report on a new search for two-body baryonic decays of the B meson. Improved sensitivity compared to previous Belle results is obtained from 414fb-1 of data that corresponds to 449×106 BB̄ pairs, which were taken on the Υ(4S) resonance and collected with the Belle detector at the KEKB e+e- collider. No significant signals are observed and we set the 90% confidence level upper limits: B(B0→pp̄)<1.1×10-7, B(B0→Λ Λ̄)<3.2×10-7, and B(B+→pΛ̄)<3. 2×10-7.

Original languageEnglish
Article number111101
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number11
DOIs
Publication statusPublished - 2007 Jun 15

ASJC Scopus subject areas

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

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    Tsai, Y. T., Chang, P., Abe, K., Adachi, I., Aihara, H., Anipko, D., Bakich, A. M., Bitenc, U., Bizjak, I., Blyth, S., Bračko, M., Browder, T. E., Chang, M. C., Chao, Y., Chen, A., Chen, W. T., Cheon, B. G., Chistov, R., Choi, Y., ... Zupanc, A. (2007). Search for B0→pp̄, ΛΛ̄ and B+→pΛ̄ at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 75(11), [111101]. https://doi.org/10.1103/PhysRevD.75.111101