Investigation of scalar and fermion dark matter in mono-photon production at high-energy colliders

G. Gil da Silveira; M. S. Mateus

doi:10.1140/epjc/s10052-024-12528-9

2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2024) 84: 181
https://doi.org/10.1140/epjc/s10052-024-12528-9

Regular Article - Theoretical Physics

Investigation of scalar and fermion dark matter in mono-photon production at high-energy colliders

G. Gil da Silveira¹^,2^a and M. S. Mateus Jr.²

¹ PH Department, CERN, 1211, Geneva, Switzerland
² Group of Analysis and Simulation of Particles (GASP), IF-UFRGS, Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil

^a gustavo.silveira@cern.ch

Received: 8 July 2023
Accepted: 7 February 2024
Published online: 22 February 2024

Abstract

Many theories about dark matter have emerged due to its strong theoretical appeal in explaining astrophysical phenomena. However, experimental and theoretical particle physics have yet not provided evidence that dark matter is part of the observable Universe. Our work aims to investigate the interaction between Standard Model (SM) fermions and different species of dark matter (DM) particles in high-energy collisions through interaction of a new massive vector mediator, $Z^{'}$ $Z^{\prime }$ . The production of scalar and fermion DM pairs via fermion annihilation into the new vector boson is investigated near a resonance $(m_{χ} \sim M_{Z^{'}} / 2)$ $(m_{\chi }\sim M_{Z^{\prime }}/2)$ , where a SM signal from hard photon emission is considered as initial state radiation, namely a mono-photon production. Values of coupling constants between the DM and the SM particles are mapped in contrast to the Planck satellite data for thermal relic density DM computed in the correct framework for the relic density near a resonance, where a weaker suppression of the relic density is expected. We show for the CLIC and LHC kinematic regimes that certain mass ranges and coupling constants of these DM particles are in agreement with the expected relic density near a resonance and are not excluded by collider and astrophysical limits.

© The Author(s) 2024

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