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Measurement of time-dependent CP asymmetries in B-0 -> D-(*)+/-pi(-/+)and B-0 -> D-+/-rho(-/+) decays

Tools

BABAR Collaboration (Including:

Aubert, B., Barate, R., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E. et al.
). (2006) Measurement of time-dependent CP asymmetries in B-0 -> D-(*)+/-pi(-/+)and B-0 -> D-+/-rho(-/+) decays. PHYSICAL REVIEW D, 73 (11). -. ISSN 1550-7998

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Abstract

We present updated results on time-dependent CP asymmetries in fully reconstructed B-0 -> D-(*)+/-pi(-/+) and B-0 -> D-+/-rho(-/+) decays in approximately 232x10(6) Upsilon(4S)-> B (B) over bar 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 2 beta+gamma: a(D pi)=-0.010 +/- 0.023 +/- 0.007, c(lep)(D pi)=-0.033 +/- 0.042 +/- 0.012, a(D*)pi=-0.040 +/- 0.023 +/- 0.010, c(lep)(D*)pi=0.049 +/- 0.042 +/- 0.015,a(D rho)=-0.024 +/- 0.031 +/- 0.009, c(lep)(D rho)=-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 parallel to sin(2 beta+gamma)parallel to > 0.64 (0.40) at 68% (90%) confidence level.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Journal or Publication Title: PHYSICAL REVIEW D
Publisher: AMERICAN PHYSICAL SOC
ISSN: 1550-7998
Date: June 2006
Volume: 73
Number: 11
Number of Pages: 8
Page Range: -
Identification Number: 10.1103/PhysRevD.73.111101
Publication Status: Published
URI: http://wrap.warwick.ac.uk/id/eprint/33305

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