Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in s√=8 TeV proton-proton collisions

M Aaboud; Elin Kuutmann Bergeås; Richard Brenner; Tord Ekelöf; Mattias Ellert; Arnaud Ferrari; P. O. Joakim Gradin; Alexander Madsen; Henrik Öhman; Daniel Pelikan; Camilla Rangel-Smith; L Zwalinski; ATLAS Collaboration

doi:10.1007/JHEP09(2016)175

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Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in s√=8 TeV proton-proton collisions

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Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in s√=8 TeV proton-proton collisions

M Aaboud, Elin Kuutmann Bergeås, Richard Brenner, Tord Ekelöf, Mattias Ellert, Arnaud Ferrari, P. O. Joakim Gradin, Alexander Madsen, Henrik Öhman, Daniel Pelikan, …

Journal of High Energy Physics (JHEP), Vol.2016(9), 175

2016

DOI: 10.1007/JHEP09(2016)175

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Abstract

A selection of searches by the ATLAS experiment at the LHC for the electroweak production of SUSY particles are used to study their impact on the constraints on dark matter candidates. The searches use 20 fb−1 of proton-proton collision data at s√=8 TeV. A likelihood-driven scan of a five-dimensional effective model focusing on the gaugino-higgsino and Higgs sector of the phenomenological minimal supersymmetric Standard Model is performed. This scan uses data from direct dark matter detection experiments, the relic dark matter density and precision flavour physics results. Further constraints from the ATLAS Higgs mass measurement and SUSY searches at LEP are also applied. A subset of models selected from this scan are used to assess the impact of the selected ATLAS searches in this five-dimensional parameter space. These ATLAS searches substantially impact those models for which the mass m(χ~01) of the lightest neutralino is less than 65 GeV, excluding 86% of such models. The searches have limited impact on models with larger m(χ~01) due to either heavy electroweakinos or compressed mass spectra where the mass splittings between the produced particles and the lightest supersymmetric particle is small.

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Title: Subtitle: Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in s√=8 TeV proton-proton collisions
Creators: M Aaboud - Universite Mohammed Premier Oujda
Elin Kuutmann Bergeås - Universite Mohammed Premier Oujda
Richard Brenner - Uppsala University
Tord Ekelöf - Uppsala University
Mattias Ellert - Uppsala University
Arnaud Ferrari - Uppsala University
P. O. Joakim Gradin - Centre National pour la Recherche Scientifique et Technique (CNRST)
Alexander Madsen - Deutsches Elektronensynchroton DESY
Henrik Öhman - Uppsala University
Daniel Pelikan - University of Sussex
Camilla Rangel-Smith - Högenergifysik
L Zwalinski - CERN
ATLAS Collaboration
Contributors: U Mallik (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: Journal of High Energy Physics (JHEP), Vol.2016(9), 175
DOI: 10.1007/JHEP09(2016)175
ISSN: 1029-8479
eISSN: 1029-8479
Language: English
Date published: 2016
Academic Unit: Physics and Astronomy
Record Identifier: 9984199928602771

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