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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

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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 Collaboration
A 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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D (PRD)

ISSN

2470-0029

Publisher

American Physical Society

Issue

052010

Volume

97

Page range

1-35

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2018-05-22

First Open Access (FOA) Date

2018-05-22

First Compliant Deposit (FCD) Date

2018-05-20

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