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

doi:10.1140/epjc/s10052-015-3306-z

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Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector	1 MB	Adobe Acrobat PDF	View Details	Download
DOI Доступ к ресурсу на сайте издателя				10.1140/epjc/s10052-015-3306-z

Title: Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
Creator: Aad, G.
Creator: Abdallah, J.
Creator: Chelkov, G. A.
Creator: Abbott, B.
Contributor: Томский государственный университет Радиофизический факультет Научные подразделения РФФ
Subject: ATLAS, детектор
Большой адронный коллайдер
темная материя
столкновение частиц
Date: 2015
DOI: 10.1140/epjc/s10052-015-3306-z
Description: 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. Eventswith largemissing 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. These limits are particularly strong for low-mass dark matter. Using a simplified model, constraints are set on the mass of dark matter and of a coloured mediator suitable to explain a possible signal of annihilating dark matter.

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collection(s): Радиофизический факультет
Identifier: vtls:000526125
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000526125
Type: статьи в журналах
Source: The European physical journal C. 2015. Vol. 75, № 2. P. 92 (1-22)
Language: eng

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