https://doi.org/10.1140/epjc/s10052-018-6407-7
Regular Article - Theoretical Physics
Spin-3/2 dark matter in a simple t-channel model
1
National Institute for Theoretical Physics; School of Physics, University of the Witwatersrand, Johannesburg, Wits, 2050, South Africa
2
Department of Physics and Astrophysics, University of Delhi, New Delhi, Delhi, India
* e-mail: mukesh.kumar@cern.ch
Received:
13
November
2017
Accepted:
23
October
2018
Published online:
12
November
2018
We consider a spin-3/2 fermionic dark matter (DM) particle interacting with the Standard Model quarks through the exchange of a charged and coloured scalar or vector mediator in a simple t-channel model. It is found that for the vector mediator case, almost the entire parameter space allowed by the observed relic density is already ruled out by the direct detection LUX data. No such bounds exist on the interaction mediated by scalar particles. Monojet + missing energy searches at the Large Hadron Collider provide the most stringent bounds on the parameters of the model for this case. The collider bounds put a lower limit on the allowed DM masses.
© The Author(s), 2018
