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Search for same-charge top-quark pair production in pp collisions at √s = 13 TeV with the ATLAS detector ATLAS Collaboration
Abstract
A search for the production of top-quark pairs with the same electric charge (tt or
t¯t¯) is presented. The analysis uses proton-proton collision data at √s = 13 TeV, recorded by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. Events with two same-charge leptons and at least two b-tagged jets are selected.
Neural networks are employed to defne two selections sensitive to additional couplings beyond
the Standard Model that would enhance the production rate of same-sign top-quark pairs. No
signifcant signal is observed, leading to an upper limit on the total production cross-section
of same-sign top-quark pairs of 1.6 fb at 95% confdence level. Corresponding limits on the
three Wilson coefcients associated with the O (1) tu , O (1) Qu, and O (8) Qu operators in the Standard
Model Efective Field Theory framework are derived.
Item Metadata
| Title |
Search for same-charge top-quark pair production in pp collisions at √s = 13 TeV with the ATLAS detector
|
| Creator | |
| Publisher |
Springer Berlin Heidelberg
|
| Date Issued |
2025-02-12
|
| Description |
A search for the production of top-quark pairs with the same electric charge (tt or
t¯t¯) is presented. The analysis uses proton-proton collision data at √s = 13 TeV, recorded by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. Events with two same-charge leptons and at least two b-tagged jets are selected.
Neural networks are employed to defne two selections sensitive to additional couplings beyond
the Standard Model that would enhance the production rate of same-sign top-quark pairs. No
signifcant signal is observed, leading to an upper limit on the total production cross-section
of same-sign top-quark pairs of 1.6 fb at 95% confdence level. Corresponding limits on the
three Wilson coefcients associated with the O (1) tu , O (1) Qu, and O (8) Qu operators in the Standard
Model Efective Field Theory framework are derived.
|
| Subject | |
| Genre | |
| Type | |
| Language |
eng
|
| Date Available |
2025-07-15
|
| Provider |
Vancouver : University of British Columbia Library
|
| Rights |
Attribution 4.0 International (CC BY 4.0)
|
| DOI |
10.14288/1.0449397
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| URI | |
| Affiliation | |
| Citation |
Journal of High Energy Physics. 2025 Feb 12;2025(2):84
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| Publisher DOI |
10.1007/JHEP02(2025)084
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| 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)