We present measurements of branching fractions and CP-violating asymmetries in B-0-->rho(+/-)pi(-/+) and B-0-->rho(-)K(+) decays. The results are obtained from a data sample of 88.9x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. From a time-dependent maximum likelihood fit we measure the branching fractions B(B-0-->rho(+/-)pi(-/+))=[22.6+/-1.8 (stat)+/-2.2 (syst)]x10(-6) and B(B-0-->rho(-)K(+))=(7.3 (-1.2) (+1.3)+/-1.3)x10(-6), and the CP-violating charge asymmetries A(CP)(rhopi)=-0.18+/-0.08+/-0.03 and A(CP)(rhoK)=0.28+/-0.17+/-0.08, the direct CP violation parameter C-rhopi=0.36+/-0.18+/-0.04 and the mixing-induced CP violation parameter S-rhopi=0.19+/-0.24+/-0.03, and the dilution parameters DeltaC(rhopi)=0.28 (-0.19) (+0.18)+/-0.04 and DeltaS(rhopi)=0.15+/-0.25+/-0.03.

Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2003). Measurements of branching fractions and CP-violating asymmetries in B-0 ->rho(+/-)h(-/+) decays. PHYSICAL REVIEW LETTERS, 91(20) [10.1103/PhysRevLett.91.201802].

Measurements of branching fractions and CP-violating asymmetries in B-0 ->rho(+/-)h(-/+) decays

CARPINELLI, Massimo;
2003

Abstract

We present measurements of branching fractions and CP-violating asymmetries in B-0-->rho(+/-)pi(-/+) and B-0-->rho(-)K(+) decays. The results are obtained from a data sample of 88.9x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B Factory. From a time-dependent maximum likelihood fit we measure the branching fractions B(B-0-->rho(+/-)pi(-/+))=[22.6+/-1.8 (stat)+/-2.2 (syst)]x10(-6) and B(B-0-->rho(-)K(+))=(7.3 (-1.2) (+1.3)+/-1.3)x10(-6), and the CP-violating charge asymmetries A(CP)(rhopi)=-0.18+/-0.08+/-0.03 and A(CP)(rhoK)=0.28+/-0.17+/-0.08, the direct CP violation parameter C-rhopi=0.36+/-0.18+/-0.04 and the mixing-induced CP violation parameter S-rhopi=0.19+/-0.24+/-0.03, and the dilution parameters DeltaC(rhopi)=0.28 (-0.19) (+0.18)+/-0.04 and DeltaS(rhopi)=0.15+/-0.25+/-0.03.
Articolo in rivista - Articolo scientifico
BABAR detector
English
B. Aubert et al. (BABAR Collaboration)
Aubert, B., Barate, R., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., et al. (2003). Measurements of branching fractions and CP-violating asymmetries in B-0 ->rho(+/-)h(-/+) decays. PHYSICAL REVIEW LETTERS, 91(20) [10.1103/PhysRevLett.91.201802].
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