Abazov, V. M. ; Mondal, N. K. ; et., al (2007) Measurement of the charge asymmetry in semileptonic Bs0 decays Physical Review Letters, 98 (15). 151801_1-151801_7. ISSN 0031-9007
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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.98.151...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.98.151801
Abstract
We have performed the first direct measurement of the time-integrated flavor untagged charge asymmetry in semileptonic Bs0 decays ASLs,unt by comparing the decay rate of Bs0→μ+Ds-νX, where Ds-→φπ- and φ→K+K-, with the charge-conjugate B-s0 decay rate. This sample was selected from 1.3 fb-1 of data collected by the D0 experiment in run II of the Fermilab Tevatron collider. We obtain ASLs,unt=[1.23±0.97(stat)±0.17(syst)]×10-2. Assuming that Δms/Γ-s»1, this result can be translated into a measurement of the CP-violating phase in Bs0 mixing: ΔΓs/Δmstanφs= [2.45±1.93(stat)±0.35(syst)]×10-2.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 92564 |
| Deposited On: | 01 Jun 2012 11:38 |
| Last Modified: | 01 Jun 2012 11:38 |
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