2015/07/05 by David Delepine, Delepine, David, Gaber Faisel +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.1507.01188
17 pages, no figures, accepted for publication
arxiv created 2019/07/10 · arxiv updated 2019/07/11
Violation of charge conjugation-parity (\rm CP) symmetry plays a major rule in the dominance of matter in our universe. A kind of \rm CP violation results from the asymmetry of the life time measured in M0 and M0, here M is a heavy meson, decays to final states which is referred in the literature as AΓf. In this paper, we give an estimation of the upper bound on |AΓf| for the Cabibbo Favored D0 → K- π+ decay process in different models. We show that in the standard model, |AΓf| \lesssimO (10-10). Recently a bound on AΓf has been obtained: (AfΓ)Exp.= (1.6 ± 1)× 10-4. This result motivates further studies on AΓf in beyond standard model physics. In the framework of two Higgs doublet model with generic Yukawa structure, we show that |AΓf|\lesssim O (10-7) which is several orders of magnitude smaller than the current experimental value. Finally, in the framework of left-right symmetric models in which the mixing between the left and the right gauge bosons is allowed and the left-right symmetry is not manifest at unification scale, we find that AΓf can be as large as |AΓf|\lesssimO (10-5) which is one order of magnitude smaller than the experimentally measured value by LHCb collaborators.