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

da Silveira, G. Gil; Mateus, M.S.

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

Article
Report number	arXiv:2308.03680
Title	Investigation of scalar and fermion dark matter in mono-photon production at high-energy colliders
Related title	Investigation of spin-dependent dark matter in mono-photon production at high-energy colliders
Author(s)	da Silveira, G. Gil (CERN ; Rio Grande do Sul U.) ; Mateus, M.S. (Rio Grande do Sul U.)
Publication	2024-02-22
Imprint	2023-08-07
Number of pages	30
Note	30 pages, 14 figures, 1 table
In:	Eur. Phys. J. C 84 (2024) 181
DOI	10.1140/epjc/s10052-024-12528-9
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
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'. The production of scalar and fermion DM pairs via fermion annihilation into the new vector boson is investigated near a resonance, 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.
Copyright/License	preprint: (License: CC BY-NC-ND 4.0) publication: © 2024-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³

$Feynman diagrams for the interaction of SM fermions, $\psi$, with a scalar (left), fermion (center), and vector (right) DM, $\chi$, field through a $\zp$ boson. The couplings $\grl$ and $\gx$ represents the coupling of the $\zp$ boson with the SM and the DM fields, respectively.$

$Top: correction $\xi(\xg)$ in terms of the photon energy fraction, which account for radiative corrections. The slope shows the different contributions of such corrections, increasing $\delta$ at very low photon energies and rapidly decreasing for more energetic photons. Bottom: the ratio of the cross section with ISR, $\xstotl$, and without ISR, $\hxstot$ that represents the value $1+\delta$ carrying all radiative corrections. In both cases the cross sections are computed with $\Mdf=3$~TeV and $\mx=$~1~GeV.$ Show more plots

Corresponding record in: Inspire

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