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Measurement of the branching fraction and CP asymmetry in B+ --> rho+pi0 |
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| Authors: | Zhang J Abe K Abe K Abe T Aihara H Asano Y Aulchenko V Aushev T Aziz T Bahinipati S Bakich A M Bay A Bedny I Bitenc U Bizjak I Blyth S Bondar A Bozek A Bracko M Browder T E Chang P Chao Y Chen K-F Cheon B G Chistov R Choi S-K Choi Y Chuvikov A Danilov M Dash M Dong L Y Dragic J Drutskoy A Eidelman S Eiges V Enari Y Fratina S Gabyshev N Garmash A Gershon T Gokhroo G Golob B Hayashii H Hazumi M Higuchi T Hinz L Hokuue T Hoshi Y Hou W-S Hsiung Y B Iijima T Imoto A Inami K Ishikawa A Ishino H Itoh R Iwasaki H Iwasaki M Iwasaki Y Kang J H Kang J S Katayama N Kawai H Kawasaki T Khan H R Kichimi H |
| Affiliation: | High Energy Accelerator Research Organization (KEK), Tsukuba, Japan. |
| Abstract: | We report a measurement of the branching fraction for the decay B+ --> rho(+) pi(0) based on a 140 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We measure the branching fraction B(B(+) --> rho(+)pi(0)) = (13.2 +/- 2.3(stat)(+1.4)(-1.9)(syst)) x 10(-6), and the CP-violating asymmetry A(CP)(B-/+ -->rho(-/+)pi(0))=0.06 +/- 0.17(stat)(+0.04)(-0.05)(syst). |
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