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(+) RID C-5223-2009 RID C-5719-2008 RID D-1055-2009

LUSIANI, Alberto;
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: http://hdl.handle.net/11384/4848
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