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Evidence for large direct CP violation in B+/- --> rho(770)0K+/- from analysis of three-body charmless B+/- --> K+/-pi+/-pi+/- decays |
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| Authors: | Garmash A Abe K Abe K Adachi I Aihara H Asano Y Aushev T Aziz T Bahinipati S Bakich A M Barbero M Bedny I Bitenc U Bizjak I Bondar A Bozek A Bracko M Brodzicka J Browder T E Chang P Chao Y Chen A Chen K-F Chen W T Cheon B G Chistov R Choi Y Choi Y K Chuvikov A Dalseno J Danilov M Dash M Dragic J Drutskoy A Eidelman S Epifanov D Fratina S Gabyshev N Gershon T Go A Gokhroo G Golob B Gorisek A Ha H C Hara T Hasegawa Y Hastings N C Hayasaka K Hayashii H Hazumi M Hokuue T Hoshi Y Hou S Hou W-S Hsiung Y B Iijima T Imoto A Inami K Ishikawa A Itoh R Iwasaki M Iwasaki Y Kapusta P Katayama N Kawai H |
| Affiliation: | Princeton University, Princeton, New Jersey 08544, USA. |
| Abstract: | We report results on a Dalitz analysis of three-body charmless B+/- --> K+/-pi+/-pi+/- decay including searches for direct CP violation. We report the first observation of the decay B+/- --> f2(1270)K+/- with a statistical significance above 6sigma. We also observe first evidence for large direct CP violation in the B+/- --> rho(770)0K+/- channel. The results are obtained with a data sample that contains 386 10(6) BB pairs collected at the Y(4s) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. |
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