Measurement of the CP-violation parameter of B0 mixing and decay with pp̄→μμX data

Authors

V. M. Abazov, Joint Institute for Nuclear Research, DubnaFollow
B. Abbott, University of Oklahoma
M. Abolins, Michigan State UniversityFollow
B. S. Acharya, Tata Institute of Fundamental Research, Mumbai
M. Adams, University of Illinois at ChicagoFollow
T. Adams, Florida State UniversityFollow
M. Agelou, CEA SaclayFollow
E. Aguilo, University of Alberta
Abaz Kryemadhi, Messiah UniversityFollow
M. Ahsan, Kansas State UniversityFollow

Document Type

Article

Publication Date

11-20-2006

Abstract

We measure the dimuon charge asymmetry A in pp̄ collisions at a center of mass energy s=1960GeV. The data was recorded with the D0 detector and corresponds to an integrated luminosity of approximately 1.0fb-1. Assuming that the asymmetry A is due to asymmetric B0↔B̄0 mixing and decay, we extract the CP-violation parameter of B0 mixing and decay: ( B0)1+| B0|2=AB04=-0.0023±0.0011(stat)±0.0008(syst).AB0 is the dimuon charge asymmetry from decays of B0B̄0 pairs. The general case, with CP violation in both B0 and Bs0 systems, is also considered. Finally we obtain the forward-backward asymmetry that quantifies the tendency of μ+ to go in the proton direction and μ- to go in the antiproton direction. The results are consistent with the standard model and constrain new physics. © 2006 The American Physical Society.

Recommended Citation

Abazov, V. M.; Abbott, B.; Abolins, M.; Acharya, B. S.; Adams, M.; Adams, T.; Agelou, M.; Aguilo, E.; Kryemadhi, Abaz; and Ahsan, M., "Measurement of the CP-violation parameter of B0 mixing and decay with pp̄→μμX data" (2006). Educator Scholarship & Departmental Newsletters. 164.
https://mosaic.messiah.edu/mps_ed/164