Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays
BaBar Collaboration: J. P. Lees, V. Poireau, V. Tisserand, J. Garra, Tico, E. Grauges, A. Palano, G. Eigen, B. Stugu, D. N. Brown, L. T. Kerth,, Yu. G. Kolomensky, G. Lynch, H. Koch, T. Schroeder, D. J. Asgeirsson, C., Hearty, T. S. Mattison, J. A. McKenna, R. Y. So, A. Khan
TL;DR
This paper reports a search for direct CP violation in specific D meson decays using a large data sample, employing Dalitz plot analysis techniques to detect asymmetries, but finds no significant CP violation.
Contribution
First search for direct CP violation in D+- --> K+ K- pi+- decays using both model-dependent and independent Dalitz plot analyses.
Findings
Measured CP asymmetry A_CP = (0.35 +- 0.30 +- 0.15)%
No significant evidence of CP violation found
Utilized 476 fb-1 data sample from BaBar
Abstract
We report on a search for direct CP asymmetry in the singly Cabibbo-suppressed decay D+- --> K+ K- pi+- using a data sample of 476 fb-1 accumulated with the BaBar detector running at and just below the Y(4S) resonance. The CP-violating decay rate asymmetry A_CP is determined to be (0.35 +- 0.30 +- 0.15)%. Model-dependent and model-independent Dalitz plot analysis techniques are used to search for CP-violating asymmetries in the various intermediate states.
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