Measurement of $B^0_s$ mixing parameters from the flavor-tagged decay $B^0_s o J/psi phi$
Abazov, V. M. and others
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Abstract
From an analysis of the flavor-tagged decay bsdec we obtain the width difference between the $B_s^0$ light and heavy mass eigenstates, $Delta Gamma_s equiv Gamma_L - Gamma_H = 0.19 pm 0.07 {rm (stat)}thinspace ^{_s160.02}_{-0.01} {rm (syst)}$ ps$^{-1}$, and the CP-violating phase, $phi_{s} =-0.57 ^{_s160.24}_{-0.30} {rm (stat)}thinspace ^{_s160.07}_{-0.02} {rm (syst)}$. The allowed 90% C.L. intervals of $Delta Gamma_s$ and $phi_s$ are $0.06
