1999/08/31 by Chao-Shang Huang, Liao Wei · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.61.116002
published as Phys.Rev. D61 (2000) 116002 · 14 pages, latex, 5 figures
arxiv created 2000/03/01 · openalex publication_date 2000/05/04 · arxiv updated 2009/11/30 · openalex created_date 2016/08/23 · openalex updated_date 2026/07/28
Direct CP asymmetries and the T-odd normal polarization of leptons in the inclusive decay \stackrel\ensuremath→BXsl+l^\ensuremath- are investigated in the minimal supergravity model with CP violating phases. The contributions coming from exchanging neutral Higgs bosons are included. It is shown that direct CP violation in the branching ratio, ACP1, is of O(10^\ensuremath-3) for l=e,\ensuremathμ,\ensuremathτ. The T-odd violating normal polarization for l=\ensuremathμ can reach 0.5 percent when tan\ensuremathβ is large (say, 36). For l=\ensuremathτ and, in the case of a large tan\ensuremathβ, direct CP violation in backward-forward asymmetry ACP2 can reach 1%, the normal polarization of \ensuremathτ can be as large as a few percent, and both are sensitive to the two CP violating phases \ensuremathφ_\ensuremathμ and \ensuremathφ_A0. Consequently it could be possible to observe them (in particular, the normal polarization of \ensuremathτ) in future B factories.