Signatures of top flavour-changing dark matter

A bstract We develop the phenomenology of scenarios in which a dark matter candidate interacts with a top quark through flavour-changing couplings, employing a simplified dark matter model with an s -channel vector-like mediator. We study in detail the top-charm flavour-changing interaction, by inve...

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Bibliographic Details
Published in:The journal of high energy physics 2016-03, Vol.2016 (3), p.1-33, Article 60
Main Authors: D’Hondt, Jorgen, Mariotti, Alberto, Mawatari, Kentarou, Moortgat, Seth, Tziveloglou, Pantelis, Van Onsem, Gerrit
Format: Article
Language:English
Subjects:
Asymmetry
Charge
Classical and Quantum Gravitation
Couplings
Dark matter
Density
Elementary Particles
High Energy Physics - Phenomenology
Phenomenology
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Signatures
Strategy
String Theory
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Summary:A bstract We develop the phenomenology of scenarios in which a dark matter candidate interacts with a top quark through flavour-changing couplings, employing a simplified dark matter model with an s -channel vector-like mediator. We study in detail the top-charm flavour-changing interaction, by investigating the single top plus large missing energy signature at the LHC as well as constraints from the relic density and direct and indirect dark matter detection experiments. We present strategies to distinguish between the top-charm and top-up flavour-changing models by taking advantage of the lepton charge asymmetry as well as by using charm-tagging techniques on an extra jet. We also show the complementarity between the LHC and canonical dark matter experiments in exploring the viable parameter space of the models.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2016)060