|
|||||
|
|
Evidence for B+-->omegal+nu |
|
| Authors: | Schwanda C Abe K Abe K Abe T Adachi I Aihara H Akatsu M Asano Y Aushev T Bahinipati S Bakich A M Ban Y Banas E Bay A Bizjak I Bondar A Bozek A Bracko M Browder T E Chang M-C Chao Y Cheon B G Choi Y Choi Y K Chuvikov A Cole S Danilov M Dash M Dong L Y 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 W-S Huang H-C Iijima T Inami K Ishikawa A Itoh R Iwasaki H Iwasaki M Kang J H Kang J S Kapusta P Katayama N Kawai H Kichimi H Kim H J Kinoshita K Koppenburg P Korpar S Krizan P Krokovny P Kumar S Kwon Y-J Lange J S Leder G Lee S H |
| Institution: | Institute of High Energy Physics, Vienna. |
| Abstract: | We have searched for the decay B+-->omegal(+)nu (l=e or mu) in 78 fb(-1) of Upsilon(4S) data (85x10(6)BB 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. |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ | |