Constraining Elko dark matter at the LHC with monophoton events

A mass-dimension-one fermion, also known as Elko, constitutes a dark-matter candidate which might interact with photons at the tree level in a specific fashion. In this work, we investigate the constraints imposed by unitarity and LHC data on this type of interactions using the search for new physic...

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Veröffentlicht in:	Europhysics letters 2018-02, Vol.121 (3), p.31001
Hauptverfasser:	Alves, Alexandre, Dias, M., de Campos, F., Duarte, L., Hoff da Silva, J. M.
Format:	Artikel
Sprache:	eng
Schlagworte:	12.38.Bx 13.85.Rm 95.35.+d Dark matter Electromagnetic interactions Fermions
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creator	Alves, Alexandre Dias, M. de Campos, F. Duarte, L. Hoff da Silva, J. M.
description	A mass-dimension-one fermion, also known as Elko, constitutes a dark-matter candidate which might interact with photons at the tree level in a specific fashion. In this work, we investigate the constraints imposed by unitarity and LHC data on this type of interactions using the search for new physics in monophoton events. We found that Elkos which can explain the dark matter relic abundance mainly through electromagnetic interactions are excluded at the 95% CL by the 8 TeV LHC data for masses up to 1 TeV.
doi_str_mv	10.1209/0295-5075/121/31001
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title	Constraining Elko dark matter at the LHC with monophoton events
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