Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0)
BABAR Collaboration (Including:). (2006) Measurement of the branching fraction and time-dependent CP asymmetry in the decay B-0 ->(D*+D*-KS0). PHYSICAL REVIEW D, 74 (9). -. ISSN 1550-7998 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1103/PhysRevD.74.091101
We study the decay B-0 ->(D*+D*-KS0) using (230 +/- 2)x10(6)B (B) over bar pairs collected by the BABAR detector at the PEP-II B factory. We measure a branching fraction B(B-0 ->(D*+D*-KS0))=(4.4 +/- 0.4 +/- 0.7)x10(-3) and find evidence for the decay B-0 -> D*-Ds1+(2536) with a significance of 4.6 sigma. A time-dependent CP asymmetry analysis is also performed to study the possible resonant contributions to B-0 ->(D*+D*-KS0) and the sign of cos2 beta. Our measurement indicates that there is a sizable resonant contribution to the decay B-0 ->(D*+D*-KS0) from an unknown D-s1(+) state with large width, and that cos2 beta is positive at the 94% confidence level under certain theoretical assumptions.
|Item Type:||Journal Article|
|Subjects:||Q Science > QB Astronomy
Q Science > QC Physics
|Journal or Publication Title:||PHYSICAL REVIEW D|
|Publisher:||AMERICAN PHYSICAL SOC|
|Number of Pages:||8|
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