Majorana dark matter with a coloured mediator: collider vs direct and indirect searches

A bstract We investigate the signatures at the Large Hadron Collider of a minimal model where the dark matter particle is a Majorana fermion that couples to the Standard Model via one or several coloured mediators. We emphasize the importance of the production channel of coloured scalars through the...

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Bibliographic Details
Published in:The journal of high energy physics 2014-06, Vol.2014 (6), p.1-27, Article 169
Main Authors: Garny, Mathias, Ibarra, Alejandro, Rydbeck, Sara, Vogl, Stefan
Format: Article
Language:English
Subjects:
Channels
Classical and Quantum Gravitation
Dark matter
Elementary Particles
Exchange
Flavours
High energy physics
Jets
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Scalars
Searching
Spectra
String Theory
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Summary:A bstract We investigate the signatures at the Large Hadron Collider of a minimal model where the dark matter particle is a Majorana fermion that couples to the Standard Model via one or several coloured mediators. We emphasize the importance of the production channel of coloured scalars through the exchange of a dark matter particle in the t-channel, and perform a dedicated analysis of searches for jets and missing energy for this model. We find that the collider constraints are highly competitive compared to direct detection, and can even be considerably stronger over a wide range of parameters. We also discuss the complementarity with searches for spectral features at gamma-ray telescopes and comment on the possibility of several coloured mediators, which is further constrained by flavour observables.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP06(2014)169