Evidence for neutral B meson decays to ωk*0

P. Goldenzweig, A. J. Schwartz, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, A. Bay, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, A. ChenK. F. Chen, B. G. Cheon, C. C. Chiang, R. Chistov, I. S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, D. H. Kah, J. H. Kang, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, C. Liu, Y. Liu, J. MacNaughton, F. Mandl, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, T. Nagamine, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, R. Seidl, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. G. Shiu, J. B. Singh, A. Somov, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, N. Tamura, M. Tanaka, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. C. Wang, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

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16 Citations (Scopus)

Abstract

We present the results of a study of the charmless vector-vector decay B0→ωK*0 with 657×106 BB̄ pairs collected with the Belle detector at the KEKB e+e- collider. We measure the branching fraction to be B(B0→ωK*0)=[1.8±0.7(stat)±0.3(syst)]×10- 6 with 3.0σ significance. We also perform a helicity analysis of the ω and K*0 vector mesons, and obtain the longitudinal polarization fraction fL(B0→ωK*0)=0.56±0.29(stat)-0.08+0.18(syst). Finally, we measure a large nonresonant branching fraction B[B0→ω K+π-;MKπ∈(0.755,1.250)GeV/c2]=[5.1±0.7(stat)±0.7(syst)] ×10-6 with a significance of 9.5σ.

Original languageEnglish
Article number231801
JournalPhysical review letters
Volume101
Issue number23
DOIs
Publication statusPublished - 2008 Dec 5

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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