Measurements of exclusive Bs0 decays at the Υ(5S) resonance

A. Drutskoy, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, E. Barberio, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, T. E. Browder, M. C. Chang, P. Chang, Y. Chao, A. Chen, K. F. Chen, W. T. ChenB. G. Cheon, R. Chistov, Y. Choi, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, M. J. Lee, A. Limosani, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, G. Varner, S. Villa, A. Vinokurova, C. H. Wang, Y. Watanabe, J. Wicht, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, V. Zhilich, V. Zhulanov, A. Zupanc

研究成果: 雜誌貢獻期刊論文同行評審

24 引文 斯高帕斯(Scopus)

摘要

Several exclusive Bs0 decays are studied using a 1.86fb-1 data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. In the Bs0→Ds-π+ decay mode we find 10 Bs0 candidates and measure the corresponding branching fraction. Combining the Bs0→Ds(*)-π+, Bs0→Ds(*)-ρ+, Bs0→J/ψ, and Bs0→J/ψη decay modes, a significant Bs0 signal is observed. The ratio σ(e+e-→Bs*B̄s*)/σ(e+e-→Bs(*) B̄s(*))=(93-9+7±1)% is obtained at the Υ(5S) energy, indicating that Bs0 meson production proceeds predominantly through the creation of Bs*B̄s* pairs. The Bs0 and Bs* meson masses are measured to be M(Bs0)=(5370±1±3)MeV/c2 and M(Bs*)= (5418±1±3)MeV/c2. Upper limits on the Bs0→γγ, Bs0→ γ, Bs0→K+K-, and Bs0→Ds(*)+Ds(*)- branching fractions are also reported.

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文章編號012002
期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
76
發行號1
DOIs
出版狀態已出版 - 12 7月 2007

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