Measurement of the charge asymmetry in semileptonic Bs decays
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. | |
| dc.date | 2007-01-06 | |
| dc.date | 2007-01-23 | |
| dc.date.accessioned | 2026-07-07T11:58:21Z | |
| dc.date.available | 2026-07-07T11:58:21Z | |
| dc.description | We have performed the first direct measurement of the time integrated flavor untagged charge asymmetry in semileptonic Bs decays, Asl(unt), by comparing the decay rate of Bs --> mu+ Ds- nu X, where Ds- --> phi pi- and phi --> K+K-, with the charge-conjugate Bs-bar decay rate. This sample was selected from 1.3/fb of data collected by the D0 experiment in RunII of the Fermilab Tevatron collider. We obtain Asl(unt) = [1.23 +- 0.97(stat) +- 0.17(syst)]*10^-2. Assuming that Delta(M_s)/Gamma_s >> 1 and Delta(Gamma_s)/(2 Gamma_s) < 1, this result can be translated into a measurement on the CP-violating phase in Bs mixing: Delta(Gamma_s)/Delta(M_s)*tan(phi_s) = [2.45 +- 1.93(stat) +- 0.35(syst)]*10^-2. | |
| dc.description | Submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0701007 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0701007 | |
| dc.identifier | Phys.Rev.Lett.98:151801,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.98.151801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206194 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the charge asymmetry in semileptonic Bs decays | |
| dc.type | text |