Bertram, Iain and Borissov, Guennadi and Williams, Mark and Fox, Harald and Ross, Anthony and Ratoff, Peter and D0 Collaboration, The (2013) Measurement of the semileptonic charge asymmetry using Bs^0 -> D_s mu X decays. Physical review letters, 110 (1): 011801. ISSN 1079-7114
Full text not available from this repository.Abstract
We present a measurement of the time-integrated flavor-specific semileptonic charge asymmetry in the decays of Bs mesons that have undergone flavor mixing, a^s_ls, using B_s^0 (barB_s^0) -> D_s^-/+ mu^+/- X decays, with D_s^-/+ -> phi pi^-/+ and phi 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 B_s^0 and barB^0_s candidates yields the flavor-specific asymmetry a^s_ls = [-1.08 pm 0.72 (stat) +/-0.17 (syst)]% which is the most precise measurement and in agreement with the standard model prediction.