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Search for dark matter particles produced in association with a top quark pair at $\sqrt{s} =$ 13 TeV

2019-01-11Journal article Open access
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dc.contributor.authorCMS collaboration (2304 authors)
dc.contributor.authorNayak, Aruna
dc.contributor.authorAraujo, Mariana
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão da Cruz e Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorGalinhas, Bruno
dc.contributor.authorGallinaro, Michele
dc.contributor.authorHollar, Jonathan
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorSeixas, Joao
dc.contributor.authorStrong, Giles
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.date.accessioned2019-02-05T16:42:10Z
dc.date.available2019-02-05T16:42:10Z
dc.date.issued2019-01-11
dc.date.updated2019-02-05T16:42:09Z
dc.description.abstractA search is performed for dark matter particles produced in association with a top quark pair in proton-proton collisions at s=13  TeV. The data correspond to an integrated luminosity of 35.9  fb-1 recorded by the CMS detector at the LHC. No significant excess over the standard model expectation is observed. The results are interpreted using simplified models of dark matter production via spin-0 mediators that couple to dark matter particles and to standard model quarks, providing constraints on the coupling strength between the mediator and the quarks. These are the most stringent collider limits to date for scalar mediators, and the most stringent for pseudoscalar mediators at low masses.
dc.description.versionPeer Reviewed
dc.identifierPhys.Rev.Lett. 122 (2019) 011803 Phys. Rev. Lett. 122 (2019) 011803; DOI 10.1103/PhysRevLett.122.011803
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.122.011803
dc.identifier.urihttp://hdl.handle.net/10400.26/27685
dc.language.isoeng
dc.titleSearch for dark matter particles produced in association with a top quark pair at $\sqrt{s} =$ 13 TeV
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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