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Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in $ \sqrt{s}=8 $ TeV proton-proton collisions

2016-09-30Journal article Open access
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dc.contributor.authorATLAS collaboration (2855 authors)
dc.contributor.authorAguilar-Saavedra, Juan Antonio
dc.contributor.authorAmor Dos Santos, Susana Patricia
dc.contributor.authorAnjos, Nuno
dc.contributor.authorAraque, Juan Pedro
dc.contributor.authorCarvalho, João
dc.contributor.authorCastro, Nuno Filipe
dc.contributor.authorConde Muiño, Patricia
dc.contributor.authorDa Cunha Sargedas De Sousa, Mario Jose
dc.contributor.authorFiolhais, Miguel
dc.contributor.authorGalhardo, Bruno
dc.contributor.authorGomes, Agostinho
dc.contributor.authorGonçalo, Ricardo
dc.contributor.authorJorge, Pedro
dc.contributor.authorMachado Miguens, Joana
dc.contributor.authorMaio, Amélia
dc.contributor.authorManeira, José
dc.contributor.authorOleiro Seabra, Luis Filipe
dc.contributor.authorOnofre, António
dc.contributor.authorPedro, Rute
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, João
dc.contributor.authorSilva, José
dc.contributor.authorTavares Delgado, Ademar
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-04T10:53:21Z
dc.date.available2019-02-04T10:53:21Z
dc.date.issued2016-09-30
dc.date.updated2019-02-04T10:53:21Z
dc.description.abstractA 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 $ \sqrt{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\left({\tilde{\chi}}_1^0\right) $ of the lightest neutralino is less than 65 GeV, excluding 86% of such models. The searches have limited impact on models with larger $ m\left({\tilde{\chi}}_1^0\right) $ due to either heavy electroweakinos or compressed mass spectra where the mass splittings between the produced particles and the lightest supersymmetric particle is small.
dc.description.versionPeer Reviewed
dc.identifierJHEP 1609 (2016) 175; DOI 10.1007/JHEP09(2016)175
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP09(2016)175
dc.identifier.urihttp://hdl.handle.net/10400.26/27155
dc.language.isoeng
dc.titleDark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in $ \sqrt{s}=8 $ TeV proton-proton collisions
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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