Evidence for B+ → ωl+v

C. Schwanda, K. Abe, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, M. C. ChangY. Chao, B. G. Cheon, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, M. Hazumi, I. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W. S. Hou, H. C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, H. Kichimi, H. J. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, S. Kumar, Y. J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S. W. Lin, J. MacNaughton, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, H. Miyake, H. Miyata, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, O. Schneider, J. Schumann, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, H. Yanai, J. Ying, Z. P. Zhang, D. Žontar, D. Zürcher

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19 Citations (Scopus)


The decay of B+ → ωl+ν (l = e or μ) in 78 fb-1 of υ(4S) data accumulated with the Belle detector is discussed. To estimate the neutrino momentum, the final state is fully reconstructed using the ω decay into π+π -π0, combined with detector hermeticity. It is found that corresponding to a branching fraction of (1.3±0.4±0.2±0.3) × 10-4, a signal of 414±125 events is found in the data, where the first two errors are systematic and statistical, respectively. The estimated form-factor uncertainty is reflected from the third error.

Original languageEnglish
Article number131803
Pages (from-to)131803-1-131803-5
JournalPhysical review letters
Issue number13
Publication statusPublished - 2004 Sep 24
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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