Title:
|
Evidence for direct CP violation from Dalitz-plot analysis of B±→K±π∓π±
|
Author:
|
Garra Ticó, Jordi; Graugés Pous, Eugeni; BABAR Collaboration
|
Other authors:
|
Universitat de Barcelona |
Abstract:
|
We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K ± π ∓ π ± . Using a sample of ( 383.2 ± 4.2 ) × 10 6 B ¯¯¯ B pairs collected by the BABAR detector, we measure C P -averaged branching fractions and direct C P asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct C P violation in the decay B ± → ρ 0 ( 770 ) K ± , with a C P -violation parameter A C P = ( + 44 ± 10 ± 4 + 5 − 13 ) % . |
Subject(s):
|
-Física de partícules -Experiments -Particle physics -Experiments |
Rights:
|
(c) American Physical Society, 2008
|
Document type:
|
Article Article - Published version |
Published by:
|
American Physical Society
|
Share:
|
|