Beck, H. P.; Chatterjee, M.; Ereditato, A.; Franconi, L.; Halser, L.; Haug, S.; Ilg, A.; Müller, R.; O'Neill, A. P.; Schefer, M. M.; Weber, M. S. (2023). Search for supersymmetry in final states with missing transverse momentum and three or more b-jets in 139 fb⁻¹ of proton–proton collisions at √s=13 TeV with the ATLAS detector. The European physical journal. C, Particles and fields, 83(7) Springer 10.1140/epjc/s10052-023-11543-6
|
Text
s10052-023-11543-6.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (7MB) | Preview |
A search for supersymmetry involving the pair production of gluinos decaying via off-shell third-generation squarks into the lightest neutralino ( ˜χ01 ) is reported. It exploits LHC proton–proton collision data at a centre-of-mass energy √s = 13 TeV with an integrated luminosity of 139 fb−1 collected with the ATLAS detector from 2015 to 2018. The search uses events containing large missing transverse momentum, up to one electron or muon, and several energetic jets, at least three of which must be identified as containing b-hadrons. Both a simple kinematic event selection and an event selection based upon a deep neural-network are used. No significant excess above the predicted background is found. In simplified models involving the pair production of gluinos that decay via off-shell top (bottom) squarks, gluino masses less than 2.44 TeV (2.35 TeV) are excluded at 95% CL for a massless ˜χ01. Limits are also set on the gluino mass in models with variable branching ratios for gluino decays to b¯b˜χ01, t¯t˜χ01 and t¯b˜χ−1 /¯tb˜χ+1.
Item Type: |
Journal Article (Original Article) |
|---|---|
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: |
Beck, Hans Peter, Chatterjee, Meghranjana, Ereditato, Antonio, Franconi, Laura, Halser, Lea, Haug, Sigve, Ilg, Armin, Müller, Roman, O'Neill, Aaron Paul, Schefer, Meinrad Moritz, Weber, Michele |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1434-6044 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
15 Feb 2024 15:44 |
Last Modified: |
15 Feb 2024 15:53 |
Publisher DOI: |
10.1140/epjc/s10052-023-11543-6 |
Additional Information: |
Kollaboration - Es sind nur die Berner Autor*innen namentlich erwaehnt; the ATLAS collaboration |
BORIS DOI: |
10.48350/191882 |
URI: |
https://boris.unibe.ch/id/eprint/191882 |
Actions (login required)
 |
Edit item |