# Mass-matrix ansatz and constraints on $B {s}^{0}-ar{B} {s}^{0}$ mixing in 331 models - High Energy Physics - Phenomenology

Mass-matrix ansatz and constraints on $B {s}^{0}-ar{B} {s}^{0}$ mixing in 331 models - High Energy Physics - Phenomenology - Download this document for free, or read online. Document in PDF available to download.

Abstract: Comparing the theoretically predicted and measured values of the massdifference of the $B^{0} {s}$ system, we estimate the lower bound on the massof the $Z^{\prime}$ boson of models based on the $SU3 {c} \otimes SU3 {L}\otimes U1 X$ gauge group. By assuming zero-texture approaches of the quarkmass matrices, we find the ratio of the measured value to the theoreticalprediction from the Standard Model and the $Z^{\prime}$ contribution from the331 models of the mass difference of the $B^{0} {s}$ system. We find lowerbounds on the $Z^{\prime}$ mass ranging between 1 TeV and 30 TeV for the twomost popular 331 models, and four different zero-textures ans\-atze. The aboveresults are expressed as a function of the weak angle associated to the$b-s-Z^{\prime}$ couplings.

Author: ** R. Martinez, F. Ochoa**

Source: https://arxiv.org/