Schwanda, C; Abe, K; Abe, K; Abe, T; Adachi, I; Aihara, H; Akatsu, M; ... Belle Collaboration; + view all Schwanda, C; Abe, K; Abe, K; Abe, T; Adachi, I; Aihara, H; Akatsu, M; Asano, Y; Aushev, T; Bahinipati, S; Bakich, AM; Ban, Y; Banas, E; Bay, A; Bizjak, I; Bondar, A; Bozek, A; Bracko, M; Browder, TE; Chang, MC; Chao, Y; Cheon, BG; Choi, Y; Choi, YK; Chuvikov, A; Cole, S; Danilov, M; Dash, M; Dong, LY; Drutskoy, A; Eidelman, S; Eiges, V; Gabyshev, N; Gershon, T; Gokhroo, G; Golob, B; Hazumi, M; Higuchi, I; Hinz, L; Hokuue, T; Hoshi, Y; Hou, WS; Huang, HC; Iijima, T; Inami, K; Ishikawa, A; Itoh, R; Iwasaki, H; Iwasaki, M; Kang, JH; Kang, JS; Kapusta, P; Katayama, N; Kawai, H; Kichimi, H; Kim, HJ; Kinoshita, K; Koppenburg, P; Korpar, S; Krizan, P; Krokovny, P; Kumar, S; Kwon, YJ; Lange, JS; Leder, G; Lee, SH; Lesiak, T; Li, J; Limosani, A; Lin, SW; MacNaughton, J; Mandl, F; Matsumoto, T; Matyja, A; Mikami, Y; Mitaroff, W; Miyake, H; Miyata, H; Mori, T; Nagamine, T; Nagasaka, Y; Nakano, E; Nakao, M; Natkaniec, Z; Nishida, S; Nitoh, O; Nozaki, T; Ogawa, S; Ohshima, T; Okabe, T; Okuno, S; Olsen, SL; Onuki, Y; Ostrowicz, W; Ozaki, H; Pakhlov, P; Palka, H; Park, CW; Park, H; Parslow, N; Peak, LS; Piilonen, LE; Sagawa, H; Saitoh, S; Sakai, Y; Sarangi, TR; Schneider, O; Schumann, J; Schwartz, AJ; Semenov, S; Senyo, K; Sevior, ME; Shibuya, H; Singh, JB; Soni, N; Stamen, R; Stanic, S; Staric, M; Sumisawa, K; Sumiyoshi, T; Suzuki, S; Tajima, O; Takasaki, F; Tamai, K; Tanaka, M; Teramoto, Y; Tomura, T; Tsukamoto, T; Uehara, S; Uglov, T; Ueno, K; Uno, S; Varner, G; Varvell, KE; Wang, CC; Wang, CH; Yabsley, BD; Yamada, Y; Yamaguchi, A; Yamashita, Y; Yanai, H; Ying, J; Zhang, ZP; Zontar, D; Zurcher, D; Belle Collaboration; - view fewer (2004) Evidence for B+->omega l(+)nu. PHYS REV LETT , 93 (13) , Article 131803. 10.1103/PhysRevLett.93.131803.

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Abstract

We have searched for the decay B+-->omegal(+)nu (l=e or mu) in 78 fb(-1) of Y(4S) data (85x10(6)B (B) over bar events) accumulated with the Belle detector. The final state is fully reconstructed using the omega decay into pi(+)pi(-)pi(0), combined with detector hermeticity to estimate the neutrino momentum. A signal of 414+/-125 events is found in the data, corresponding to a branching fraction of (1.3+/-0.4+/-0.2+/-0.3)x10(-4), where the first two errors are statistical and systematic, respectively. The third error reflects the estimated form-factor uncertainty.

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