Measurement of high-mass tt¯ℓ+ℓ- production and lepton flavour universality-inspired effective field theory interpretations at s=13 TeV with the ATLAS detector
- NázevTitle
- Measurement of high-mass tt¯ℓ+ℓ- production and lepton flavour universality-inspired effective field theory interpretations at s=13 TeV with the ATLAS detectorMeasurement of high-mass tt¯ℓ+ℓ- production and lepton flavour universality-inspired effective field theory interpretations at s=13 TeV with the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- L. Zwalinski, O. Zormpa, T.G. Zorbas, A. Zografos, O. Zaplatílek, P. Vokáč, V. Vacek, A. Sopczak, P. Smolyanskiy, K. Smolek, S. Pospíšil, V. Petousis, R. Novotný, M. Myška, S. Mondal, V. Lysenko, Z. Hubáček, P. Fiedler, B. Bergmann, K. Augsten, B. Ali
- DOIDOI
- 10.1140/epjc/s10052-025-14695-9
- Časopis / citaceJournal / citation
- European Physical Journal C. 2025, 85(12), ISSN 1434-6044.
- RokYear
- 2025
- JazykLanguage
- eng
- WoSWoS
- 001671690300001
- ScopusScopus
- 2-s2.0-105026661634
- RIVRIV
- RIV/68407700:21220/25:00389039!RIV26-MSM-21220___
- ProjektProject
- Výzkum základních stavebních kamenů hmoty s využitím špičkových technologiíFundamental constituents of matter through frontier technologies; Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.; CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)
AbstraktAbstract
Measurements of tt¯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 s=13 TeV proton–proton collision data with an integrated luminosity of 140fb-1, recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. Measurements of the tt¯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.
Measurements of tt¯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 s=13 TeV proton–proton collision data with an integrated luminosity of 140fb-1, recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. Measurements of the tt¯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.