0587923 - FZÚ 2025 RIV DE eng J - Journal Article
Aad, G. - Aakvaag, E. - Abbott, B. - Chudoba, Jiří - Federičová, Pavla - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2893 authors
Search for new phenomena with top-quark pairs and large missing transverse momentum using 140 fb⁻¹ of pp collision data at √s= 13 TeV with the ATLAS detector.
Journal of High Energy Physics. Roč. 2024, č. 3 (2024), č. článku 139. ISSN 1029-8479. E-ISSN 1029-8479
R&D Projects: GA MŠMT(CZ) EH22_008/0004632
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : hadron-hadron scattering * p p: colliding beams * new physics: search for
OECD category: Particles and field physics
Impact factor: 5, year: 2023 ; AIS: 0.998, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1007/JHEP03(2024)139

A search is conducted for new phenomena in events with a top quark pair and large missing transverse momentum, where the top quark pair is reconstructed in final states with one isolated electron or muon and multiple jets. The search is performed using the Large Hadron Collider proton-proton collision data sample at a centre-of-mass energy of √s ​ = 13 TeV recorded by the ATLAS detector that corresponds to an integrated luminosity of 140 fb−1. An analysis based on neural network classifiers is optimised to search for directly produced pairs of supersymmetric partners of the top quark (stop), and to search for spin-0 mediators, produced in association with a pair of top quarks, that decay into dark-matter particles. In the stop search, the analysis is designed to target models in which the mass difference between the stop and the neutralino from the stop decay is close to the top quark mass.
Permanent Link: https://hdl.handle.net/11104/0354991