Search for higgsinos in compressed mass spectra using low-momentum tracks in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS Collaboration

This paper presents two searches for the electroweak production of higgsinos with compressed mass spectra using 140 fb${}^{-1}$ of $\sqrt{s}=13$ TeV proton-proton collision data coll…