Search for Direct CP Violation in Three-Body Charmless B+- => K+-pi+-pi-+ Decay

Details Search for Direct CP Violation in Three-Body Charmless B+- => K+-pi+-pi-+ Decay Search for Direct CP Violation in Three-Body Charmless B+- => K+-pi+-pi-+ Decay

2005-08-31

arxiv.org/abs/hep-ex/0509001v1

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 7 figures

Scientific paper

We report results on studies of CP violation in the three-body charmless decay B+- => K+-pi+-pi-+. Evidence at the 3.9sigma level for large direct CP violation in B+- => rho(770)0K+-$ is found. This is the first evidence for CP violation in a charged meson decay. The analysis is performed using Dalitz analysis technique with a data sample that contains 386 million BBbar pairs collected near the Y(4S) resonance, with the Belle detector operating at the KEKB asymmetric energy e+ e- collider.

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