Evidence for Direct CP Violation from Dalitz-plot analysis of B+/- -> K+/- pi+/- pi-/+
High Energy Physics - Experiment
2010-04-12 v2
Abstract
We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K+/- pi+/- pi-/+. Using a sample of 383.2 +/- 4.2 million BBbar pairs collected by the BaBar detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B+ -> rho0(770) K+, with a CP violation parameter A_CP = (+44 +/- 10 +/- 4 +5,-13)%.
Cite
@article{arxiv.0803.4451,
title = {Evidence for Direct CP Violation from Dalitz-plot analysis of B+/- -> K+/- pi+/- pi-/+},
author = {The BABAR Collaboration and B. Aubert},
journal= {arXiv preprint arXiv:0803.4451},
year = {2010}
}
Comments
14 pages, 4 postscript figures, 2 tables, published in Physical Review D