| Resumen |
We present a measurement of the time-integrated flavor-specific semileptonic charge asymmetry in the decays of B0s mesons that have undergone flavor mixing, assl, using B0s(B¯¯¯0s)→D∓sμ±X decays, with D∓s→ϕπ∓ and ϕ→K+K−, using 10.4 fb−1 of proton-antiproton collisions collected by the D0 detector during Run II at the Fermilab Tevatron Collider. A fit to the difference between the time-integrated D−s and D+s mass distributions of the B0s and B¯¯¯0s candidates yields the flavor-specific asymmetry assl=[−1.12±0.74(stat)±0.17(syst)]%, which is the most precise measurement and in agreement with the standard model prediction. |
