Measurement of time-dependent CP-violating asymmetries and constraints on sin(2{beta}+{gamma}) with partial reconstruction of B{yields}D*{sup {+-}}{pi}{sup {+-}} decays
Journal Article
·
· Physical Review. D, Particles Fields
We present a measurement of the time-dependent CP-violating asymmetries in decays of neutral B mesons to the final states D*{sup {+-}}{pi}{sup {+-}}, using approximately 232x10{sup 6} BB events recorded by the BABAR experiment at the PEP-II e{sup +}e{sup -} storage ring. Events containing these decays are selected with a partial reconstruction technique, in which only the high-momentum {pi}{sup {+-}} from the B decay and the low-momentum {pi}{sup {+-}} from the D*{sup {+-}} decay are used. We measure the parameters related to 2{beta}+{gamma} to be a{sub D*{pi}}=-0.034{+-}0.014{+-}0.009 and c{sub D*{pi}}{sup l}=-0.019{+-}0.022{+-}0.013. With some theoretical assumptions, we interpret our results in terms of the lower limits |sin(2{beta}+{gamma})|>0.62(0.35) at 68% (90%) confidence level.
- OSTI ID:
- 20709429
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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