Publication
Title
Search for pair production of vector-like quarks in leptonic final states in proton-proton collisions at √s=13 TeV
Author
Institution/Organisation
CMS Collaboration
Abstract
A search is presented for vector-like T and B quark-antiquark pairs produced in proton-proton collisions at a center-of-mass energy of 13TeV. Data were collected by the CMS experiment at the CERN LHC in 2016-2018, with an integrated luminosity of 138 fb(-1). Events are separated into single-lepton, same-sign charge dilepton, and multilepton channels. In the analysis of the single-lepton channel a multilayer neural network and jet identification techniques are employed to select signal events, while the same-sign dilepton and multilepton channels rely on the high-energy signature of the signal to distinguish it from standard model backgrounds. The data are consistent with standard model background predictions, and the production of vector-like quark pairs is excluded at 95% confidence level for T quark masses up to 1.54TeV and B quark masses up to 1.56TeV, depending on the branching fractions assumed, with maximal sensitivity to decay modes that include multiple top quarks. The limits obtained in this search are the strongest limits to date for T (T) over bar production, excluding masses below 1.48TeV for all decays to third generation quarks, and are the strongest limits to date for B (B) over bar production with B quark decays to tW.
Language
English
Source (journal)
Journal of high energy physics. - Bristol
Publication
Bristol : 2023
ISSN
1126-6708
1029-8479 [online]
DOI
10.1007/JHEP07(2023)020
Volume/pages
7 (2023) , p. 1-62
Article Reference
020
ISI
001062550200001
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
AMVA4NewPhysics: Advanced Multi-Variate Analysis for New Physics Searches at the LHC
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 30.10.2023
Last edited 25.04.2024
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