Combined D0 Measurements Constraining the CP-violating Phase and Width Difference in the $B_s^0$ System
High Energy Physics - Experiment
2008-11-26 v1
Abstract
We combine the D0 measurement of the width difference between the light and heavy B_s^0 mass eigenstates and of the CP-violating mixing phase determined from the time-dependent angular distributions in the B_s -> J/psi phi decays along with the charge asymmetry in semileptonic decays also measured with the D0 detector. With the additional constraint from the world average of the flavor-specific B_s^0 lifetime, we obtain Delta Gamma_s = (\Gamma_L - \Gamma_H) = 0.13 +- 0.09 ps and phi_s = -0.70 ^{+0.47}_{-0.39}. The data sample corresponds to an integrated luminosity of 1.1 fb^{-1} accumulated with the D0 detector at the Fermilab Tevatron Collider.
Cite
@article{arxiv.hep-ex/0702030,
title = {Combined D0 Measurements Constraining the CP-violating Phase and Width Difference in the $B_s^0$ System},
author = {D0 Collaboration and V. M. Abazov},
journal= {arXiv preprint arXiv:hep-ex/0702030},
year = {2008}
}
Comments
6 pages, 4 figures. Submitted to PRL. FERMILAB-PUB-07-044-E