Search for dark matter in association with an energetic photon in pp collisions at √s=13 TeV with the ATLAS detector

0549020 - FZÚ 2022 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … celkem 2926 autorů
Search for dark matter in association with an energetic photon in pp collisions at √s=13 TeV with the ATLAS detector.
Journal of High Energy Physics. Roč. 2021, č. 2 (2021), č. článku 226. ISSN 1029-8479. E-ISSN 1029-8479
Grant CEP: GA MŠMT(CZ) LTT17018
Výzkumná infrastruktura: CERN-CZ II - 90104
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN * dark matter * Hadron-Hadron scattering (experiments)
Obor OECD: Particles and field physics
Impakt faktor: 6.376, rok: 2021
Způsob publikování: Open access

A search for dark matter is conducted in final states containing a photon and missing transverse momentum in proton-proton collisions at s sqrt{s} s ​ = 13 TeV. The data, collected during 2015–2018 by the ATLAS experiment at the CERN LHC, correspond to an integrated luminosity of 139 fb−1^{−1}−1. No deviations from the predictions of the Standard Model are observed and 95% confidence-level upper limits between 2.45 fb and 0.5 fb are set on the visible cross section for contributions from physics beyond the Standard Model, in different ranges of the missing transverse momentum. The results are interpreted as 95% confidence-level limits in models where weakly interacting dark-matter candidates are pair-produced via an s-channel axial-vector or vector mediator. Dark-matter candidates with masses up to 415 (580) GeV are excluded for axial-vector (vector) mediators, while the maximum excluded mass of the mediator is 1460 (1470) GeV.

Trvalý link: http://hdl.handle.net/11104/0325054