Measurement of the CP-violating phase ΦsJ/ᴪΦ using the flavor-tagged decay B0s→J/ᴪΦ in 8 fb-1 of pp̅ collisions

Authors

V. M. Abazov, Joint Institute for Nuclear Research, Dubna, Russia
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Daniel R. Claes, University of Nebraska-LincolnFollow
Kayle DeVaughan, University of Nebraska-Lincoln
Aaron Dominguez, University of Nebraska-LincolnFollow
Michael Eads, University of Nebraska-LincolnFollow
Ioannis Katsanos, University of Nebraska-LincolnFollow
Sudhir Malik, University of Nebraska-LincolnFollow
Gregory Snow, University of Nebraska-LincolnFollow

Date of this Version

2012

Citation

PHYSICAL REVIEW D 85, 032006 (2012); DOI: 10.1103/PhysRevD.85.032006

Comments

Copyright 2012 American Physical Society

Abstract

We report an updated measurement of the CP-violating phase, Φ_s^J/ᴪΦ, and the decay-width difference for the two mass eigenstates, ∆Ӷs, from the flavor-tagged decay B⁰_s → J/ᴪΦ. The data sample corresponds to an integrated luminosity of 8.0 fb^-1 accumulated with the D0 detector using pp̅ collisions at √s= 1.96 TeV produced at the Fermilab Tevatron collider. The 68% Bayesian credibility intervals, including systematic uncertainties, are ∆Ӷs = 0.163 ^{+ 0.065}_-0.064 ps^-1 and Φ_s^J/ᴪΦ= -0.55^+0.38_-0.36. The p-value for the Standard Model point is 29.8%.