Search for CP Violation in D Meson Decays to phi pi+

Preprint

7 October 2011

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.1110.0694

Abstract

We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP violating asymmetries for the Cabibbo-suppressed decays D+ -> K+K-pi+ and the Cabibbo-favored decays Ds -> K+K-pi+ in the K+K- mass region of the phi resonance. Using 955/fb of data collected with the Belle detector we obtain A_CP(D+ -> phi pi+) = (+0.51 +- 0.28 +- 0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of five. We find no evidence for direct CP violation.

Keywords

SEARCH FOR CP
MESON DECAYS
CP VIOLATION
VIOLATION
CABIBBO
PHI PI

All Related Versions

Version 1, 2011-10-04, ArXiv
Version 2, 2011-10-07, ArXiv
Published version: Physical Review Letters, 108 (7), 071801.

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