Beyond SM Physics and searches for SUSY at the LHC

TL;DR

This paper reviews the Standard Model, explores supersymmetry as a promising BSM theory, and discusses constraints from LHC data on MSSM and non-minimal SUSY models, highlighting their phenomenological implications.

Contribution

It provides a comprehensive overview of SUSY models, including MSSM and BLSSM, and analyzes how LHC and relic abundance data constrain their parameter spaces.

Findings

Most MSSM parameter space is ruled out by LHC and relic abundance constraints.

Non-minimal SUSY models like BLSSM can naturally incorporate neutrino masses.

Phenomenological implications at the LHC are significant for non-minimal models.

Abstract

This is the written version of a talk given by S.K. at the $10^{th}$ International Conference on High Energy and Astroparticle, Constantine, Algeria. We briefly review the Standard Model (SM) and the major evidences and main direction of physics beyond the SM (BSM). We introduce supersymmetry, as one of the well-motivated BSM. Basic introduction to Minimal Supersymmetric Standard Model (MSSM) is given. We analyze the thermal relic abundance of lightest neutralino, which is the Lightest Supersymmetric Particle (LSP) in the MSSM. We show that the combined Large Hadron Collider (LHC) and relic abundance constraints rule out most of the MSSM parameter space except a very narrow region. We also review non-minimal SUSY model, based on the gauge group $SU(3)_C \times SU(2)_L \times U(1)_Y \times U(1)_{B-L}$ (BLSSM), where an Inverse Seesaw mechanism of light neutrino mass generation is naturally implemented. The phenomenological implications of this type of model at the Large Hadron Collider (LHC) are analyzed.