- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Faculty Research and Publications /
- Search for pair-produced scalar and vector leptoquarks...
Open Collections
UBC Faculty Research and Publications
Search for pair-produced scalar and vector leptoquarks decaying into third-generation quarks and first- or second-generation leptons in pp collisions with the ATLAS detector ATLAS Collaboration
Abstract
A search for pair-produced scalar and vector leptoquarks decaying into quarks and leptons of different generations is presented. It uses the full LHC Run 2 (2015–2018) data set of 139 fb−1 collected with the ATLAS detector in proton–proton collisions at a centre-of-mass energy of √ s = 13 TeV. Scalar leptoquarks with charge −(1/3)e as well as scalar and vector leptoquarks with charge +(2/3)e are considered. All possible decays of the pair-produced leptoquarks into quarks of the third generation (t, b) and charged or neutral leptons of the first or second generation (e, µ, ν) with exactly one electron or muon in the final state are investigated. No significant deviations from the Standard Model expectation are observed. Upper limits on the production cross-section are provided for eight models as a function of the leptoquark mass and the branching ratio of the leptoquark into the charged or neutral lepton. In addition, lower limits on the leptoquark masses are derived for all models across a range of branching ratios. Two of these models have the goal of providing an explanation for the recent B-anomalies. In both models, a vector leptoquark decays into charged and neutral leptons of the second generation with a similar branching fraction. Lower limits of 1980 GeV and 1710 GeV are set on the leptoquark mass for these two models.
Item Metadata
Title |
Search for pair-produced scalar and vector leptoquarks decaying into third-generation quarks and first- or second-generation leptons in pp collisions with the ATLAS detector
|
Creator | |
Publisher |
Springer Berlin Heidelberg
|
Date Issued |
2023-06-27
|
Description |
A search for pair-produced scalar and vector leptoquarks decaying into quarks
and leptons of different generations is presented. It uses the full LHC Run 2 (2015–2018)
data set of 139 fb−1
collected with the ATLAS detector in proton–proton collisions at a
centre-of-mass energy of √
s = 13 TeV. Scalar leptoquarks with charge −(1/3)e as well as
scalar and vector leptoquarks with charge +(2/3)e are considered. All possible decays of the
pair-produced leptoquarks into quarks of the third generation (t, b) and charged or neutral
leptons of the first or second generation (e, µ, ν) with exactly one electron or muon in the
final state are investigated. No significant deviations from the Standard Model expectation
are observed. Upper limits on the production cross-section are provided for eight models
as a function of the leptoquark mass and the branching ratio of the leptoquark into the
charged or neutral lepton. In addition, lower limits on the leptoquark masses are derived
for all models across a range of branching ratios. Two of these models have the goal of
providing an explanation for the recent B-anomalies. In both models, a vector leptoquark
decays into charged and neutral leptons of the second generation with a similar branching
fraction. Lower limits of 1980 GeV and 1710 GeV are set on the leptoquark mass for these
two models.
|
Subject | |
Genre | |
Type | |
Language |
eng
|
Date Available |
2023-09-15
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
Attribution 4.0 International (CC BY 4.0)
|
DOI |
10.14288/1.0435888
|
URI | |
Affiliation | |
Citation |
Journal of High Energy Physics. 2023 Jun 27;2023(6):188
|
Publisher DOI |
10.1007/JHEP06(2023)188
|
Peer Review Status |
Reviewed
|
Scholarly Level |
Faculty; Researcher
|
Copyright Holder |
The Author(s)
|
Rights URI | |
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
Attribution 4.0 International (CC BY 4.0)