Experimental measurements outlasting MSSM-30 spectra

TL;DR

This paper introduces a comprehensive 30-parameter MSSM framework with benchmark points for long-lived particles and Higgs decays, highlighting lighter supersymmetric particles than previously expected, based on extensive parameter scans.

Contribution

It provides a new, detailed MSSM benchmark framework considering multiple experimental constraints, emphasizing the possibility of lighter supersymmetric particles.

Findings

Light neutralinos and charginos can be lighter than W-boson mass.

Benchmark points demonstrate viable MSSM scenarios with light supersymmetric particles.

The framework integrates constraints from electroweak physics, B-physics, electron dipole moment, and dark matter relic density.

Abstract

Benchmarks for beyond the Standard Model (BSM) searches are mostly constructed around particular features of interest related to the experiment under consideration without giving due address to the results from other experiments. In this article, we present a 30-parameter MSSM phenomenological framework and benchmark points relevant for the long-lived particles and Higgs boson decays to BSM particle studies. These are extracted via scans of the model parameter space compatible with low-energy constraints from electroweak physics, B-physics, the dipole moment of the electron, and cold dark matter relic density measurements. We present four benchmark points that are illustrative on how light values of supersymmetric particles can still be. Neutralinos and charginos can be lighter than W-boson mass in sharp contrast to the expectations by conclusions derived based on simplified supersymmetric models.