Download or read book Measurement of the Branching Fraction and Time-Dependent CP Asymmetry in the Decay B0 to D*+D*-Ks written by and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors study the decay B° 2!D*D*− K{sub S}° using (230 ± 2) x 106 B{bar B} pairs collected by the BABAR detector at the PEP-II B factory. They measure a branching fraction [Beta](B° 2!D*D*− K{sub S}°) = (4.4 ± 0.4 ± 0.7) x 10−3 and find evidence for the decay B° 2!D*− D{sub s1}+(2536) with a statistical significance of 4.6 [sigma]. A time-dependent CP asymmetry analysis is also performed to study the possible resonant contributions to B° 2!D*+D*− K{sub S}° and the sign of cos2[beta]. Their measurement indicates that there is a sizable resonant contribution to the decay B° 2!D*+ D*− K{sub S}° from a unknown D{sub s1}+ state with large width, and that cos2[beta] is positive at the 94% confidence level under certain theoretical assumptions.