Combined D0 Measurements Constraining the CP-violating Phase and Width Difference in the $B_s^0$ System

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 = (Γ_L - Γ_H) = 0.13 +- 0.09 ps${}^{-1}$ 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.

6 pages, 4 figures. Submitted to PRL. FERMILAB-PUB-07-044-E

References in corpus (2)

• Lifetime Difference and CP-Violating Phase in the B_s^0 System
• Measurement of the charge asymmetry in semileptonic Bs decays

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• Moriond QCD 2007 - Theory Summary