Anders, J.K.; Beck, H.P.; Chatterjee, M.; Ereditato, A.; Franconi, L.; Halser, L.; Haug, S.; Ilg, A.; Müller, R.; O'Neill, A.P.; Weber, M.S. (2023). Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the W-boson mass in √s=13 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics, 06 Springer 10.1007/JHEP06(2023)031
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A search for the electroweak production of pairs of charged sleptons or charginos decaying into two-lepton final states with missing transverse momentum is presented. Two simplified models of R-parity-conserving supersymmetry are considered: direct pair-production of sleptons (˜`˜`), with each decaying into a charged lepton and a ˜χ01 neutralino, and direct pair-production of the lightest charginos ( ˜χ±1 ˜χ∓1 ), with each decaying into a W -boson and a ˜χ01. The lightest neutralino ( ˜χ01) is assumed to be the lightest supersymmetric particle (LSP). The analyses target the experimentally challenging mass regions where m( ˜`) − m( ˜χ01) and m( ˜χ±1 ) − m( ˜χ01) are close to the W -boson mass (‘moderately compressed’ regions). The search uses 139 fb−1 of √s = 13 TeV proton-proton collisions recorded by the ATLAS detector at the Large Hadron Collider. No significant excesses over the expected background are observed. Exclusion limits on the simplified models under study are reported in the (˜`, ˜χ01) and ( ˜χ±1 , ˜χ01) mass planes at 95% confidence level (CL). Sleptons with masses up to 150 GeV are excluded at 95% CL for the case of a mass-splitting between sleptons and the LSP of 50 GeV. Chargino masses up to 140 GeV are excluded at 95% CL for the
case of a mass-splitting between the chargino and the LSP down to about 100 GeV.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Anders, John Kenneth, Beck, Hans Peter, Chatterjee, Meghranjana, Ereditato, Antonio, Franconi, Laura, Halser, Lea, Haug, Sigve, Ilg, Armin, Müller, Roman, O'Neill, Aaron Paul, Weber, Michele |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
08 Feb 2024 14:53 |
Last Modified: |
08 Feb 2024 15:02 |
Publisher DOI: |
10.1007/JHEP06(2023)031 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autor*innen namentlich erwaehnt; the ATLAS collaboration |
Uncontrolled Keywords: |
Hadron-Hadron Scattering , Supersymmetry |
BORIS DOI: |
10.48350/191896 |
URI: |
https://boris.unibe.ch/id/eprint/191896 |
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