https://doi.org/10.1140/epjc/s10052-019-7103-y
Regular Article - Theoretical Physics
New physics signature in 
effective width asymmetries
1
Division de Ciencias e Ingenierías, Universidad de Guanajuato, C.P. 37150, León, Guanajuato, Mexico
2
Department of Physics, Faculty of Arts and Sciences, Süleyman Demirel University, 32260, Isparta, Turkey
3
Depto. de Física, Universidad de los Andes, A. A. 4976-12340, Bogotá, Colombia
* e-mail: gaberfaisel@sdu.edu.tr
Received:
29
March
2019
Accepted:
2
July
2019
Published online:
15
July
2019
Violation of charge conjugation-parity (
) symmetry plays a major rule in the dominance of matter in our universe. A kind of violation results from the asymmetry of the life time measured in 
and 
, here M is a heavy meson, decays to final states which is referred in the literature as 
. In this paper, we give an estimation of the upper bound on 
for the Cabibbo Favored 
decay process in different models. We show that in the standard model, 
. Recently a bound on has been obtained: 
. This result motivates further studies on in beyond standard model physics. In the framework of two Higgs doublet model with generic Yukawa structure, we show that 
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 can be as large as 
which is one order of magnitude smaller than the experimentally measured value by LHCb collaborators.
© The Author(s), 2019
