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Type: Journal article
Title: Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in √s=8 TeV proton-proton collisions
Other Titles: Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in root s=8 TeV proton-proton collisions
Author: The, A.
Aaboud, M.
Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Abeloos, B.
Aben, R.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adamczyk, L.
Adams, D.
Adelman, J.
Adomeit, S.
et al.
Citation: Journal of High Energy Physics, 2016; 2016(9):175-1-175-43
Publisher: Springer
Issue Date: 2016
ISSN: 1126-6708
Statement of
M. Aaboud … P. Jackson … L. Lee … A. Petridis … M.J. White … et al. [The ATLAS Collaboration]
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.
Keywords: Hadron-Hadron scattering (experiments)
Rights: Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP³.
RMID: 0030057435
DOI: 10.1007/JHEP09(2016)175
Appears in Collections:Physics publications

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