Search for CP Violation in the Decays D0 --> K- K+ and D0 --> pi- pi+

Preprint

17 September 2007

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.0709.2715

Abstract

We measure CP-violating asymmetries of neutral charmed mesons in the modes D0 --> K- K+ and D0 --> pi- pi+ with the highest precision to date by using D0 --> K- pi+ decays to correct detector asymmetries. An analysis of 385.8 fb-1 of data collected with the BaBar detector yields values of aCP(KK) = (0.00 +/- 0.34 (stat.) +/- 0.13 (syst.))% and aCP(pipi) = (-0.24 +/- 0.52 (stat.) +/- 0.22 (syst.))%, which agree with Standard Model predictions.

Keywords

STANDARD MODEL
CP VIOLATION
ASYMMETRIES
DECAYS D0
PI PI
STAT
ACP
K K

All Related Versions

Version 1, 2007-09-17, ArXiv
Published version: Physical Review Letters, 100 (6), 061803.

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