Mass-matrix ansatz and constraints on $B_s^0-{\bar{B}}_s^0$ mixing in 331 models

Abstract

Comparing the theoretically predicted and measured values of the mass difference of the $B_s^0$ system, we estimate the lower bound on the mass of the $Z^{\prime }$ boson of models based on the $SU(3{)}_c\otimes SU(3{)}_L\otimes U(1{)}_X$ gauge group. By assuming zero-texture approaches of the quark mass matrices, we find the ratio of the measured value to the theoretical prediction from the Standard Model and the $Z^{\prime }$ contribution from the 331 models of the mass difference of the $B_s^0$ system. We find lower bounds on the $Z^{\prime }$ mass ranging between 1 TeV and 30 TeV for the two most popular 331 models, and four different zero-textures ansätze. The above results are expressed as a function of the weak angle associated to the $b-s-Z^{\prime }$ couplings.

To be published at Physical Revew D

References in corpus (4)

• Testing the Standard Model by precision measurement of the weak charges of quarks
• Constraints on flavor-changing Z' models by B_s mixing, Z' production, and B_s -> μ^+ μ^-
• Flavor Changing Neutral Current Effects and CP Violation in the Minimal 3-3-1 Model
• The Minimal Quiver Standard Model

Cited by in corpus (2)

• Phenomenological aspects of the exotic $T$ quark in 331 models
• Bounding the Minimal 331 Model through the Decay B -> X_s gamma