Measurements of branching fractions and CP-violating asymmetries in B0-->rho(+/-)h(-/+) decays.

Journal article

We present measurements of branching fractions and CP-violating asymmetries in B0-->rho(+/-)pi(-/+) and B0-->rho-K+ decays. The results are obtained from a data sample of 88.9 x 10(6) Upsilon(4S)-->BB 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(B0-->rho(+/-)pi(-/+))=[22.6+/-1.8 (stat)+/-2.2 (syst)]x10(-6) and B(B0-->rho-K+)=(7.3 -1.2( +1.3)+/-1.3)x10(-6), and the CP-violating charge asymmetries A(rhopi)(CP)=-0.18+/-0.08+/-0.03 and A(rhoK)(CP)=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.

Authors: Aubert, B; Barate, R; Boutigny, D; Gaillard, J; Hicheur, A

• Publication status: Published
• Journal: Physical Review Letters
• Volume: 91
• Issue: 20
• Pages: 201802
• Publication date: 2003-11-01
• DOI: 10.1103/physrevlett.91.201802
• EISSN: 1079-7114
• ISSN: 0031-9007
• Language: English
• Keywords: BABAR Collaboration