2010/08/31 by Shaouly Bar-Shalom, G. Eilam, Gad Eilam +2
Physics and Astronomy · #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2010.10.025
published as Phys.Lett.B694:374-379,2011 · 13 pages, 3 figures. A few changes and new references, separate section on decays to wrong-sign leptons; some clarifications
arxiv created 2010/10/06 · openalex publication_date 2010/10/17 · arxiv updated 2011/04/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/01
A direct CP asymmetry in inclusive semileptonic B(s) decays vanishes by CPT to lowest order in weak interactions. Calculating the asymmetry at second-order-weak interactions in the Cabibbo–Kobayashi–Maskawa framework we find Asl=(−3.2±0.9)×10−9. A maximal asymmetry which is two orders of magnitude larger is estimated in a left–right-symmetric model. This quite generic upper bound implies negligible effects on wrong-sign lepton asymmetries in B0 and Bs decays.