Journal article
Evidence for Large DirectCPViolation inB±→ρ(770)0K±from Analysis of Three-Body CharmlessB±→K±π±π±Decays
A Garmash, K Abe, K Abe, I Adachi, H Aihara, Y Asano, T Aushev, T Aziz, S Bahinipati, AM Bakich, M Barbero, I Bedny, U Bitenc, I Bizjak, A Bondar, A Bozek, M Bračko, J Brodzicka, TE Browder, P Chang Show all
Physical Review Letters | American Physical Society (APS) | Published : 2006
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.