We report a search for CP violation in the decay modes D±→K0SK±, D±s→K0SK±, and D±s→K0Sπ± using a data set corresponding to an integrated luminosity of 469  fb−1 collected with the BABAR detector at the PEP-II asymmetric energy e+e− storage rings. The decay rate CP asymmetries, ACP, are determined to be (+0.13±0.36(stat)±0.25(syst))%, (−0.05±0.23(stat)±0.24(syst))%, and (+0.6±2.0(stat)±0.3(syst))%, respectively. These measurements are consistent with zero, and also with the Standard Model prediction [(−0.332±0.006)% for the D±→K0SK± and D±s→K0SK± modes, and (+0.332±0.006)% for the D±s→K0Sπ± mode]. They are the most precise determinations to date.

Search for CP violation in the decays D-+/- -> (KSK +/-)-K-0, D-s(+/-) -> (KSK +/-)-K-0, and D-s(+/-) -> K-S(0)pi(+/-)

CONTRI, ROBERTO;GUIDO, ELISA;LO VETERE, MAURIZIO;MONGE, MARIA ROBERTA;
2013-01-01

Abstract

We report a search for CP violation in the decay modes D±→K0SK±, D±s→K0SK±, and D±s→K0Sπ± using a data set corresponding to an integrated luminosity of 469  fb−1 collected with the BABAR detector at the PEP-II asymmetric energy e+e− storage rings. The decay rate CP asymmetries, ACP, are determined to be (+0.13±0.36(stat)±0.25(syst))%, (−0.05±0.23(stat)±0.24(syst))%, and (+0.6±2.0(stat)±0.3(syst))%, respectively. These measurements are consistent with zero, and also with the Standard Model prediction [(−0.332±0.006)% for the D±→K0SK± and D±s→K0SK± modes, and (+0.332±0.006)% for the D±s→K0Sπ± mode]. They are the most precise determinations to date.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/696074
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