Search for dark matter at $\sqrt{s}=13$ TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector

Abstract : Results of a search for physics beyond the Standard Model in events containing an energetic photon and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. As the number of events observed in data, corresponding to an integrated luminosity of 36.1 $\textrm fb^{-1}$ of proton-proton collisions at a centre-of-mass energy of 13 TeV, is in agreement with the Standard Model expectations, exclusion limits in models where dark-matter candidates are pair-produced are determined. For dark-matter production via an axial-vector or a vector mediator in the s-channel, this search excludes mediator masses below 750-1200 GeV for dark-matter candidate masses below 230-480 GeV at 95% confidence level, depending on the couplings. In an effective theory of dark-matter production, the limits restrict the value of the suppression scale $M_{*}$ to be above 790 GeV at 95% confidence level. A limit is also reported on the production of a high-mass scalar resonance by processes beyond the Standard Model, in which the resonance decays to $Z\gamma$ and the Z boson subsequently decays into neutrinos.
Type de document :
Pré-publication, Document de travail
See paper for full list of authors - 45 pages in total, author list starting page 29 7 figures, 8.. 2017
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http://hal.in2p3.fr/in2p3-01507458
Contributeur : Claudine Bombar <>
Soumis le : jeudi 13 avril 2017 - 11:18:04
Dernière modification le : mercredi 19 avril 2017 - 01:07:53

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  • HAL Id : in2p3-01507458, version 1
  • ARXIV : 1704.03848

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M. Aaboud, N. Berger, A.M. Burger, M. Delmastro, L. Di Ciaccio, et al.. Search for dark matter at $\sqrt{s}=13$ TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector. See paper for full list of authors - 45 pages in total, author list starting page 29 7 figures, 8.. 2017. <in2p3-01507458>

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