On the coverage of electroweak-inos within the pMSSM with SModelS -- a comparison with the ATLAS pMSSM study

TL;DR

This paper evaluates how well ATLAS and CMS LHC constraints on electroweak-inos in the pMSSM are reproduced using SModelS v3.0, highlighting the importance of combined analyses and remaining viable parameter space.

Contribution

It compares ATLAS and CMS constraints with SModelS v3.0, including combined analysis effects, and discusses the remaining allowed electroweak-ino parameter space.

Findings

SModelS v3.0 can reproduce ATLAS constraints with high accuracy.

Combining ATLAS and CMS results enhances sensitivity to electroweak-inos.

A portion of light electroweak-inos remains viable despite LHC limits.

Abstract

The ATLAS collaboration has recently performed a vast scan of the phenomenological Minimal Supersymmetric Standard Model (pMSSM) with a focus on the electroweak-ino sector, and analysed how their Run 2 searches for electroweak production of supersymmetric (SUSY) particles constrain this dataset. All the SLHA files from the scan as well as the constraints from the eight individual searches considered by ATLAS were made publicly available. We use this material to study how well the ATLAS constraints can be reproduced with SModelS v3.0. Moreover, we explore how the picture changes when also including CMS results, and what can be gained by the statistical combination of analyses. Finally, we discuss the part of parameter space with light electroweak-inos that remains valid despite the stringent LHC limits. Our results underscore the need of a broad, multifaceted approach for maximising sensitivity and closing loopholes in the extensive SUSY parameter space.