Measurement of the CP-violation parameter of B^0 mixing and decay with pp(bar) -> mu mu X data
| dc.creator | D0 Collaboration | |
| dc.creator | Abazov, V. | |
| dc.date | 2006-09-08 | |
| dc.date.accessioned | 2026-07-07T11:58:17Z | |
| dc.date.available | 2026-07-07T11:58:17Z | |
| dc.description | We measure the dimuon charge asymmetry A in pp(bar) collisions at a center of mass energy sqrt{s} = 1960 GeV. The data was recorded with the D0 detector and corresponds to an integrated luminosity of approximately 1.0 fb-1. Assuming that the asymmetry A is due to asymmetric B^0 <-> B(bar)^0 mixing and decay, we extract the CP-violation parameter of B^0 mixing and decay: Re(epsilon_B^0)(1 + |epsilon_B^0|^2) = A_B^0/4 = -0.0023 +/- 0.0011 (stat) +/- 0.0008 (syst). A_B^0 is the dimuon charge asymmetry from decays of B^0 B(bar)^0 pairs. The general case, with CP violation in both B^0 and B_s^0 systems, is also considered. Finally we obtain the forward-backward asymmetry that quantifies the tendency of mu+ to go in the proton direction and mu- to go in the anti-proton direction. The results are consistent with the standard model and constrain new physics. | |
| dc.description | Submitted to Phys. Rev. D, LaTeX, 12 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0609014 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0609014 | |
| dc.identifier | Phys.Rev.D74:092001,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.092001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206173 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of the CP-violation parameter of B^0 mixing and decay with pp(bar) -> mu mu X data | |
| dc.type | text |