PhysRevD.97.052010.pdf (1.79 MB)
Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at vs=13??TeV with the ATLAS detector
journal contribution
posted on 2023-06-09, 13:24 authored by Alessandro CerriAlessandro Cerri, Antonella De SantoAntonella De Santo, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Kate ShawKate Shaw, Kerim Suruliz, Mark SuttonMark Sutton, Batool Safarzadeh Samani, Fabrizio SalvatoreFabrizio Salvatore, Iacopo Vivarelli, The ATLAS CollaborationA search for electroweak production of supersymmetric particles in scenarios with compressed mass spectra in final states with two low-momentum leptons and missing transverse momentum is presented. This search uses proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015–2016, corresponding to 36.1fb-1 of integrated luminosity at vs=13 TeV. Events with same-flavor pairs of electrons or muons with opposite electric charge are selected. The data are found to be consistent with the Standard Model prediction. Results are interpreted using simplified models of R-parity-conserving supersymmetry in which there is a small mass difference between the masses of the produced supersymmetric particles and the lightest neutralino. Exclusion limits at 95% confidence level are set on next-to-lightest neutralino masses of up to 145 GeV for Higgsino production and 175 GeV for wino production, and slepton masses of up to 190 GeV for pair production of sleptons. In the compressed mass regime, the exclusion limits extend down to mass splittings of 2.5 GeV for Higgsino production, 2 GeV for wino production, and 1 GeV for slepton production. The results are also interpreted in the context of a radiatively-driven natural supersymmetry model with nonuniversal Higgs boson masses.
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Publication status
- Published
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- Published version
Journal
Physical Review D (PRD)ISSN
2470-0029Publisher
American Physical SocietyExternal DOI
Issue
052010Volume
97Page range
1-35Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-05-22First Open Access (FOA) Date
2018-05-22First Compliant Deposit (FCD) Date
2018-05-20Usage metrics
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