Measurement of $\boldmath {B_s^0}$ mixing parameters from the flavor-tagged decay

D0 Collaboration, V. M. Abazov et al

From an analysis of the flavor-tagged decay \bsdec we obtain the width difference between the $B_s^0$ light and heavy mass eigenstates, $ΔΓ_s \equiv Γ_L - Γ_H = 0.19 \pm 0.07 {\rm…