Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector

0522332 - FZÚ 2020 RIV DE eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abdallah, J. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2890 autorů
Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector.
European Physical Journal C. Roč. 75, č. 2 (2015), s. 1-22, č. článku 92. ISSN 1434-6044. E-ISSN 1434-6052
Institucionální podpora: RVO:68378271
Klíčová slova: ATLAS * CERN LHC Coll * 8000 GeV-cms * effective field theory * experimental results
Obor OECD: Particles and field physics
Impakt faktor: 4.912, rok: 2015
Způsob publikování: Open access

This article reports on a search for dark matter pair production in association with bottom or top quarks in 20.3 fb−1 of pp collisions collected at s√=8 TeV by the ATLAS detector at the LHC. Events with large missing transverse momentum are selected when produced in association with high-momentum jets of which one or more are identified as jets containing b -quarks. Final states with top quarks are selected by requiring a high jet multiplicity and in some cases a single lepton. The data are found to be consistent with the Standard Model expectations and limits are set on the mass scale of effective field theories that describe scalar and tensor interactions between dark matter and Standard Model particles. Limits on the dark-matter–nucleon cross-section for spin-independent and spin-dependent interactions are also provided.

Trvalý link: http://hdl.handle.net/11104/0306847