# 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 = (\Gamma_L - \Gamma_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.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00132378
Contributor : Sylvie Flores <>
Submitted on : Wednesday, February 21, 2007 - 11:39:27 AM
Last modification on : Wednesday, September 16, 2020 - 4:19:59 PM

### Citation

V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, et al.. Combined D0 measurements constraining the CP-violating phase and width difference in the $B_s^0$ system. Physical Review D, American Physical Society, 2007, 76, pp.057101. ⟨10.1103/PhysRevD.76.057101⟩. ⟨in2p3-00132378⟩

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