A statistical combination of ATLAS Run 2 searches for charginos and neutralinos at the LHC

Author:

ATLAS Collaboration

Keyword:

High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex)

journal:

CERN-EP-2024-018

date:

2024-02-13 00:00:00

Abstract

Statistical combinations of searches for charginos and neutralinos using various decay channels are performed using $139\,$fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13\,$TeV with the ATLAS detector at the Large Hadron Collider. Searches targeting pure-wino chargino pair production, pure-wino chargino-neutralino production, or higgsino production decaying via Standard Model $W$, $Z$, or $h$ bosons are combined to extend the mass reach to the produced SUSY particles by 30-100 GeV. The depth of the sensitivity of the original searches is also improved by the combinations, lowering the 95% CL cross-section upper limits by 15%-40%.

PDF: A statistical combination of ATLAS Run 2 searches for charginos and neutralinos at the LHC.pdf