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Markov Chain Monte Carlo analysis to probe trilinear R-parity violating SUSY scenarios and possible LHC signatures

2024/11/12 by Arghya Choudhury, Sourav Mitra, Choudhury, Arghya +5 · 1 citation
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Superconducting Materials and Applications

paper · pdf · doi:10.48550/arxiv.2411.08112

openalex publication_date 2024/11/12 · openalex created_date 2024/11/16 · openalex updated_date 2026/07/28

Abstract

In this article, we probe the trilinear R-parity violating (RPV) supersymmetric (SUSY) scenarios with specific nonzero interactions in the light of neutrino oscillation, Higgs, and flavor observables. We attempt to fit the set of observables using a state-of-the-art Markov Chain Monte Carlo (MCMC) setup and study its impact on the model parameter space. Our main objective is to constrain the trilinear couplings individually, along with some other SUSY parameters relevant to the observables. We present the constrained parameter regions in the form of marginalized posterior distributions on different two-dimensional parameter planes. We perform our analyses with two different scenarios characterized by our choices for the lightest SUSY particle (LSP), bino, and stop. Our results indicate that the lepton number violating trilinear couplings λi33 (i=1,2) and λj33 (j=1,2,3) can be at most of the order of 10-4 or even smaller while tanβ is restricted to below 15 even when 3σ allowed regions are considered. We further comment on the possible LHC signatures of these LSPs focusing on and around the best-fit regions.

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