We measure time-integrated CP-violating asymmetries of neutral charmed mesons in the modes D-0 -> K-K+ and D-0 ->pi(-)pi(+) with the highest precision to date by using D-0 -> K-pi(+) decays to correct detector asymmetries. An analysis of 385.8 fb(-1) of data collected with the BABAR detector yields values of a(CP)(KK)=(0.00 +/- 0.34(stat)+/- 0.13(syst))% and a(CP)(pi pi)=(-0.24 +/- 0.52(stat)+/- 0.22(syst))%, which agree with standard model predictions.

Search for CP violation in the decays D-0 -> K-K+ and D-0 ->pi(-)pi(+)

Baracchini E;Ferroni F;
2008

Abstract

We measure time-integrated CP-violating asymmetries of neutral charmed mesons in the modes D-0 -> K-K+ and D-0 ->pi(-)pi(+) with the highest precision to date by using D-0 -> K-pi(+) decays to correct detector asymmetries. An analysis of 385.8 fb(-1) of data collected with the BABAR detector yields values of a(CP)(KK)=(0.00 +/- 0.34(stat)+/- 0.13(syst))% and a(CP)(pi pi)=(-0.24 +/- 0.52(stat)+/- 0.22(syst))%, which agree with standard model predictions.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12571/1477
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