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Measurement of the B+ --> rho+ pi0 Branching Fraction and Direct CP Asymmetry

The BABAR Collaboration·B. Aubert
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Abstract

We present improved measurements of the branching fraction and CP asymmetry for the process B+ --> rho+ pi0. The data sample corresponding to 211/fb comprises 232 million Y(4S)-->BBbar decays collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC. The yield and CP asymmetry are measured using an extended maximum likelihood fitting method. The branching fraction and CP asymmetry are found to be BR(B+ --> rho+ pi0)= [10.2 +- 1.4(stat) +- 0.9(syst)] x 10^-6 and Acp (B+ --> rho+ pi0) = -0.01 +- 0.13(stat) +- 0.02(syst).

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The BABAR Collaboration, B. Aubert. 2007-01-18. Measurement of the B+ --> rho+ pi0 Branching Fraction and Direct CP Asymmetry. https://doi.org/10.1103/physrevd.75.091103

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