UNSPECIFIED. (2005) Measurement of time-dependent CP-violating asymmetries and constraints on sin(2 beta+gamma) with partial reconstruction of B -> D-*+/-pi(+/-) decays. PHYSICAL REVIEW D, 71 (11). -. ISSN 1550-7998

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Abstract

We present a measurement of the time-dependent CP-violating asymmetries in decays of neutral B mesons to the final states D(*-/+)pi(+/-), using approximately 232x10(6) B (B) over bar events recorded by the BABAR experiment at the PEP-II e(+)e(-) storage ring. Events containing these decays are selected with a partial reconstruction technique, in which only the high-momentum pi(+/-) from the B decay and the low-momentum pi(-/+) from the D*-/+ decay are used. We measure the parameters related to 2 beta+gamma to be a(D*pi)=-0.034 +/- 0.014 +/- 0.009 and c(D*pi)(l)=-0.019 +/- 0.022 +/- 0.013. With some theoretical assumptions, we interpret our results in terms of the lower limits vertical bar sin(2 beta+gamma)vertical bar > 0.62(0.35) 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
Official Date:	June 2005
Volume:	71
Number:	11
Number of Pages:	17
Page Range:	-
Identification Number:	10.1103/PhysRevD.71.112003
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/6828

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