Light dark matter and Z′ dark force at colliders

A bstract Light DM, < 10 GeV, with sizeable direct detection rate is an interesting and less explored scenario. Collider searches can be very powerful, such as through the channel in which a pair of dark matter particle is produced in association with a jet. It is a generic possibility that the m...

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Veröffentlicht in:The journal of high energy physics 2012-07, Vol.2012 (7), Article 182
Hauptverfasser: An, Haipeng, Ji, Xiangdong, Wang, Lian-Tao
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Wang, Lian-Tao
description A bstract Light DM, < 10 GeV, with sizeable direct detection rate is an interesting and less explored scenario. Collider searches can be very powerful, such as through the channel in which a pair of dark matter particle is produced in association with a jet. It is a generic possibility that the mediator of the interaction between dark matter and the nucleus will also be accessible at the Tevatron and the LHC. Therefore, collider search of the mediator can provide a more comprehensive probe of the dark matter and its interactions. In this article, to demonstrate the complementarity of these two approaches, we focus on the possibility of the mediator being a new U(1)′ gauge boson, which is probably the simplest model which allows a large direct detection cross section for a light dark matter candidate. We combine searches in the monojet + MET channel and dijet resonance search for the mediator. We find that for the mass of Z ′ between 250 GeV and 4 TeV, resonance searches at the colliders provide stronger constraints on this model than the monojet + MET searches.
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subjects Classical and Quantum Gravitation
Constraint modelling
Dark matter
Elementary Particles
High energy physics
Large Hadron Collider
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
Resonance
Searching
String Theory
title Light dark matter and Z′ dark force at colliders
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