Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric $ U(1)_{R}\times U(1)_{B-L}$ model

Abstract

We study the low-scale predictions of the supersymmetric model extended by $U(1)_R \times U(1)_{B-L}$ symmetry, obtained by breaking $SO(10)$ symmetry at GUT scale via a left-right supersymmetric model. Two new singlet Higgs fields ($\chi_R$, $\bar{\chi}_R$) are responsible for the $U(1)_R \times U(1)_{B-L}$ symmetry breaking to the standard model gauge group. We explore the phenomenology of this model by assuming universal and non-universal boundary conditions at the GUT scale and their effects in obtaining consistency among low-energy observables, dark matter experiments, muon magnetic moment measurements, and $Z^{\prime}$ phenomenology. We examine different scenarios with both the lightest neutralino and sneutrino mass eigenstates as the dark matter candidates that satisfy all the experimental constraints. We explore the collider signals of various scenarios including different benchmarks and their significance versus standard model background. To complement our analysis, we perform recasting of several LHC analyses to verify the credibility of different benchmarks. We find that relaxing the universality conditions at $M_{\rm GUT}$ can significantly improve the agreement of the model against the experimental bounds. While the muon anomalous magnetic moment is found to be the most challenging observable to fit with the model, we find points in the parameter space consistent within $2 \sigma$ from the average measured value, employing non-universality at the GUT scale.