Search for dark matter produced in association with a single top quark or a top quark pair in proton-proton collisions at √s = 13 TeV

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dc.contributor.authorCMS Collaboration
dc.contributor.authorBuccilli, A.
dc.contributor.authorCooper, S.I.
dc.contributor.authorHenderson, C.
dc.contributor.authorRumerio, P.
dc.contributor.authorWest, C.
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2022-08-02T15:20:42Z
dc.date.available2022-08-02T15:20:42Z
dc.date.issued2019
dc.description.abstractA search for dark matter produced in association with top quarks in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The data set used corresponds to an integrated luminosity of 35.9 fb⁻¹ recorded with the CMS detector at the LHC. Whereas previous searches for neutral scalar or pseudoscalar mediators considered dark matter production in association with a top quark pair only, this analysis also includes production modes with a single top quark. The results are derived from the combination of multiple selection categories that are defined to target either the single top quark or the top quark pair signature. No significant deviations with respect to the standard model predictions are observed. The results are interpreted in the context of a simplified model in which a scalar or pseudoscalar mediator particle couples to a top quark and subsequently decays into dark matter particles. Scalar and pseudoscalar mediator particles with masses below 290 and 300 GeV, respectively, are excluded at 95% confidence level, assuming a dark matter particle mass of 1 GeV and mediator couplings to fermions and dark matter particles equal to unity.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationSirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Dragicevic, M., Erö, J., Escalante Del Valle, A., Flechl, M., Frühwirth, R., Ghete, V. M., Hrubec, J., Jeitler, M., Krammer, N., Krätschmer, I., Liko, D., … Woods, N. (2019). Search for dark matter produced in association with a single top quark or a top quark pair in proton-proton collisions at $ \sqrt{s}=13 $ TeV. In Journal of High Energy Physics (Vol. 2019, Issue 3). Springer Science and Business Media LLC. https://doi.org/10.1007/jhep03(2019)141
dc.identifier.doi10.1007/JHEP03(2019)141
dc.identifier.urihttps://ir.ua.edu/handle/123456789/9143
dc.languageEnglish
dc.language.isoen_US
dc.rights.urihttps://creativecommons.org/licenses/by/3.0
dc.subjectHigh Energy Physics - Experiment
dc.subjectDark matter
dc.subjectHadron-Hadron scattering (experiments)
dc.subjectTop physics
dc.titleSearch for dark matter produced in association with a single top quark or a top quark pair in proton-proton collisions at √s = 13 TeVen_US
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