Bilinear R-parity violating supersymmetry under the light of neutrino oscillation, higgs and flavor data

TL;DR

This paper investigates bilinear R-parity violating supersymmetry as a model for neutrino masses, Higgs data, and flavor constraints, deriving stringent bounds and exploring the potential to explain the muon g-2 anomaly within current experimental limits.

Contribution

It provides the first comprehensive global analysis combining neutrino oscillation, Higgs, flavor, and collider data to constrain bilinear R-parity violating parameters in supersymmetry.

Findings

Derived the most stringent bounds on 9 bilinear R-parity violating parameters.

Identified a small sub-TeV parameter space capable of explaining the muon g-2 anomaly.

Confirmed compatibility of the model with current collider, neutrino, and flavor data.

Abstract

In this work, we explore a well motivated beyond the Standard Model scenario, namely, R-parity violating Supersymmetry, in the context of light neutrino masses and mixing. We assume that the R-parity is only broken by the lepton number violating bilinear term. We try to fit two non-zero neutrino mass square differences and three mixing angle values obtained from the global $\chi^2$ analysis of neutrino oscillation data. We have also taken into account the updated data of the standard model (SM) Higgs mass and its coupling strengths with other SM particles from LHC Run-II along with low energy flavor violating constraints like rare b-hadron decays. We have used a Markov Chain Monte Carlo (MCMC) analysis to constrain the new physics parameter space. While doing so, we ensure that all the existing collider constraints are duly taken into account. Through our analysis, we have derived the most stringent constraints possible to date with existing data on the 9 bilinear R-parity violating parameters along with $\mu$ and $\tan\beta$. We further explore the possibility of explaining the anomalous muon~(g~-~2) measurement staying within the parameter space allowed by neutrino, Higgs and flavor data while satisfying the collider constraints as well. We find that there still remains a small sub-TeV parameter space where the required excess can be obtained.