Constraints on parameter space of BLMSSM from particle mass

TL;DR

This paper investigates the parameter space constraints of the BLMSSM model by analyzing particle mass matrices and comparing with experimental lower mass limits, to identify viable regions for new physics signals.

Contribution

It provides a detailed analysis of how the masses of new particles in BLMSSM depend on model parameters, constraining the parameter space based on mass limits.

Findings

Masses of new particles vary with model parameters.

Constraints on parameter space are derived from lower mass limits.

Certain parameter regions are excluded by current experimental bounds.

Abstract

To explaine the matter-antimatter asymmetry, a supersymmetric extention of the standard model is proposed where baryon and lepton numbers are local gauged(BLMSSM), and exotic superfields are introduced when gauge group is enlarged to $SU(3)_C\otimes SU(2)_L\otimes U(1)_Y \otimes U(1)_B \otimes U(1)_L$. As signals of new physics have not been observed on Large Hadron Collider, the parameter space relevant to the masses of new particles is stringently constrainted. By diagonalizing the mass squared matrices for neutral scalar sectors and the mass matrices for exotic quarks, we plot the masses of new particles varying with different parameters with some assumptions, so the constraints on model parameter is obtained with different lower limit on particle mass.