Measurements of t tbar l+ l- production in the region of high dilepton invariant mass with effective field theory (EFT) interpretations are presented. They are performed using final states with three isolated leptons (electrons or muons) and are based on root(s) = 13 TeV proton–proton collision data with an integrated luminosity of 140 fb-1, recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. Measurements of the t tbar l+ l- signal strength and cross-section upper-limits are performed inclusively in lepton flavour and separately for electrons and muons. The study also aims to probe anomalous four-fermion interactions including to test for possible lepton flavor universality violation. No significant deviations from the Standard Model predictions are observed and the measurements are interpreted through the EFT formalism to provide new constraints on the relevant operators.

Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2025). Measurement of high-mass t tbar l+ l- production and lepton flavour universality-inspired effective field theory interpretations at root(s) = 13 TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(12) [10.1140/epjc/s10052-025-14695-9].

Measurement of high-mass t tbar l+ l- production and lepton flavour universality-inspired effective field theory interpretations at root(s) = 13 TeV with the ATLAS detector

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Di Ciaccio, A.;Giuli, F.;
2025-01-01

Abstract

Measurements of t tbar l+ l- production in the region of high dilepton invariant mass with effective field theory (EFT) interpretations are presented. They are performed using final states with three isolated leptons (electrons or muons) and are based on root(s) = 13 TeV proton–proton collision data with an integrated luminosity of 140 fb-1, recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. Measurements of the t tbar l+ l- signal strength and cross-section upper-limits are performed inclusively in lepton flavour and separately for electrons and muons. The study also aims to probe anomalous four-fermion interactions including to test for possible lepton flavor universality violation. No significant deviations from the Standard Model predictions are observed and the measurements are interpreted through the EFT formalism to provide new constraints on the relevant operators.
2025
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
English
Con Impact Factor ISI
Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2025). Measurement of high-mass t tbar l+ l- production and lepton flavour universality-inspired effective field theory interpretations at root(s) = 13 TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(12) [10.1140/epjc/s10052-025-14695-9].
Null, N; Aad, G; Aakvaag, E; Abbott, B; Abdelhameed, S; Abeling, K; Abicht, Nj; Abidi, Sh; Aboelela, M; Aboulhorma, A; Abramowicz, H; Abulaiti, Y; Ach...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/447764
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