Evidence for the decay B_s^0 --> D_s^(*)D_s^(*) and a measurement of Delta_Gamma_s^CP/Gamma_s
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. M. | |
| dc.date | 2008-11-13 | |
| dc.date | 2009-02-04 | |
| dc.date.accessioned | 2026-07-07T13:01:04Z | |
| dc.date.available | 2026-07-07T13:01:04Z | |
| dc.description | We search for the semi-inclusive process B_s^0 --> D_s^(*)D_s^(*) using 2.8 fb^-1 of ppbar collisions at s^(1/2) = 1.96 TeV recorded by the D0 detector operating at the Fermilab Tevatron Collider. We observe 26.6 +/- 8.4 signal events with a significance above background of 3.2 standard deviations yielding a branching ratio of Br(B_s^0 --> D_s^(*)D_s^(*)) = 0.035 +/- 0.010(stat) +/- 0.011(syst). Under certain theoretical assumptions, these double-charm final states saturate CP-even eigenstates in the B_s^0 decays resulting in a width difference of Delta_Gamma_s^CP/Gamma_s = 0.072 +/- 0.021(stat) +/- 0.022(syst). | |
| dc.description | submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/0811.2173 | |
| dc.identifier | http://arxiv.org/abs/0811.2173 | |
| dc.identifier | Phys.Rev.Lett.102:091801,2009 | |
| dc.identifier | doi:10.1103/PhysRevLett.102.091801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/226038 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Evidence for the decay B_s^0 --> D_s^(*)D_s^(*) and a measurement of Delta_Gamma_s^CP/Gamma_s | |
| dc.type | text |