Publication
Title
Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at √s=13 TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
A search for the pair production of the lightest supersymmetric partner of the top quark, the top squark ((t) over tilde (1)), is presented. The search targets the four-body decay of the (t) over tilde (1), which is preferred when the mass difference between the top squark and the lightest supersymmetric particle is smaller than the mass of the W boson. This decay mode consists of a bottom quark, two other fermions, and the lightest neutralino ( (x) over tilde (0)(1)), which is assumed to be the lightest supersymmetric particle. The data correspond to an integrated luminosity of 138 fb(-1) of proton-proton collisions at a center-of-mass energy of 13TeV collected by the CMS experiment at the CERN LHC. Events are selected using the presence of a high-momentum jet, an electron or muon with low transverse momentum, and a significant missing transverse momentum. The signal is selected based on a multivariate approach that is optimized for the difference between m( (t) over tilde (1)) and m( (x) over tilde (0)(1)). The contribution from leading background processes is estimated from data. No significant excess is observed above the expectation from standard model processes. The results of this search exclude top squarks at 95% confidence level for masses up to 480 and 700 GeV for m( (t) over tilde (1))- m( (x) over tilde (0)(1)) = 10 and 80 GeV, respectively.
Language
English
Source (journal)
Journal of high energy physics. - Bristol
Publication
Bristol : 2023
ISSN
1126-6708
1029-8479 [online]
DOI
10.1007/JHEP06(2023)060
Volume/pages
6 (2023) , p. 1-51
Article Reference
60
ISI
001035579500001
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
The CMS experiment at the Large Hadron Collider at CERN.
The CMS experiment at the CERN Large Hadron Collider.
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 02.10.2023
Last edited 25.04.2024
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