Measurement of the Lifetime Difference in the B_s^0 System
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. M. | |
| dc.date | 2005-07-19 | |
| dc.date.accessioned | 2026-07-07T11:58:08Z | |
| dc.date.available | 2026-07-07T11:58:08Z | |
| dc.description | We present a study of the decay B_s^0 -> J/psi phi We obtain the CP-odd fraction in the final state at time zero, R_perp = 0.16 +/- 0.10 (stat) +/- 0.02 (syst), the average lifetime of the (B_s, B_sbar) system, tau (B_s^0) =1.39^{+0.13}_{-0.16} (stat) ^{+0.01}_{-0.02} (syst) ps, and the relative width difference between the heavy and light mass eigenstates, Delta Gamma/Gamma = (Gamma_L - Gamma_H)/Gamma =0.24^{+0.28}_{-0.38} (stat) ^{+0.03}_{-0.04} (syst). With the additional constraint from the world average of the B_s^0$lifetime measurements using semileptonic decays, we find tau (B_s^0)= 1.39 +/- 0.06 ~ps and Delta Gamma/Γ= 0.25^{+0.14}_{-0.15}. For the ratio of the B_s^0 and B^0 lifetimes we obtain tau(B_s^0)/tau(B^0)} = 0.91 +/- 0.09 (stat) +/- 0.003 (syst). | |
| dc.description | submitted to Phys. Rev. Lett. FERMILAB-PUB-05-324-E | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0507084 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0507084 | |
| dc.identifier | Phys.Rev.Lett.95:171801,2005 | |
| dc.identifier | doi:10.1103/PhysRevLett.95.171801 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206123 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the Lifetime Difference in the B_s^0 System | |
| dc.type | text |