Volume 121, Number 3, February 2018
|Number of page(s)||6|
|Section||The Physics of Elementary Particles and Fields|
|Published online||04 April 2018|
Constraining Elko dark matter at the LHC with monophoton events
1 Departamento de Física, Universidade Federal de São Paulo (UNIFESP) - Diadema-SP, Brazil
2 Departamento de Engenharia Ambiental, ICT-Universidade Estadual Paulista (UNESP) São José dos Campos-SP, Brazil
3 Departamento de Física e Química, Universidade Estadual Paulista (UNESP) - Guaratinguetá-SP, Brazil
Received: 12 January 2018
Accepted: 4 March 2018
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.
PACS: 13.85.Rm – Limits on production of particles / 12.38.Bx – Perturbative calculations / 95.35.+d – Dark matter (stellar, interstellar, galactic, and cosmological)
© EPLA, 2018
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