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Measurement of time-dependent CP asymmetries in B0D(*)±π and B0D±ρ decays

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. D 73, 111101(R) – Published 2 June 2006

Abstract

We present updated results on time-dependent CP asymmetries in fully reconstructed B0D(*)±π and B0D±ρ decays in approximately 232×106 Υ(4S)BB¯ events collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. From a time-dependent maximum-likelihood fit we obtain for the parameters related to the CP violation angle 2β+γ: aDπ=0.010±0.023±0.007, clepDπ=0.033±0.042±0.012, aD*π=0.040±0.023±0.010, clepD*π=0.049±0.042±0.015,aDρ=0.024±0.031±0.009, clepDρ=0.098±0.055±0.018, where the first error is statistical and the second is systematic. Using other measurements and theoretical assumptions, we interpret the results in terms of the angles of the Cabibbo-Kobayashi-Maskawa unitarity triangle and find |sin(2β+γ)|>0.64(0.40) at 68% (90%) confidence level.

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  • Received 2 March 2006

DOI:https://doi.org/10.1103/PhysRevD.73.111101

©2006 American Physical Society

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Vol. 73, Iss. 11 — 1 June 2006

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