Mass-matrix ansatz and constraints on $B_{s}^{0}-\bar{B}_{s}^{0}$ mixing in 331 models

Details Mass-matrix ansatz and constraints on $B_{s}^{0}-\bar{B}_{s}^{0}$ mixing in 331 models Mass-matrix ansatz and constraints on $B_{s}^{0}-\bar{B}_{s}^{0}$ mixing in 331 models

2008-02-03

arxiv.org/abs/0802.0309v1

Phys.Rev.D77:065012,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

To be published at Physical Revew D

Scientific paper

10.1103/PhysRevD.77.065012

Comparing the theoretically predicted and measured values of the mass difference of the $B^{0}_{s}$ 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 $B^{0}_{s}$ 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 ans\"atze. The above results are expressed as a function of the weak angle associated to the $b-s-Z^{\prime}$ couplings.

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