Constraints on dark matter annihilation to fermions and a photon - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2018

Constraints on dark matter annihilation to fermions and a photon

Résumé

We consider Majorana dark matter annihilation to fermion-anti-fermion pair and a photon in the effective field theory paradigm, by introducing dimension 6 and dimension 8 operators in the Lagrangian. For a given value of the cut-off scale, the latter dominates the annihilation process for heavier dark matter masses. We find a cancellation in the dark matter annihilation to a fermion-anti-fermion pair when considering the interference of the dimension 6 and the dimension 8 operators. Constraints on the effective scale cut-off is derived while considering indirect detection experiments and the relic density requirements and they are compared to the bound coming from collider experiments.

Dates et versions

hal-01807426 , version 1 (04-06-2018)

Identifiants

Citer

Debtosh Chowdhury, Abhishek M. Iyer, Ranjan Laha. Constraints on dark matter annihilation to fermions and a photon. Journal of High Energy Physics, 2018, 05, pp.152. ⟨10.1007/JHEP05(2018)152⟩. ⟨hal-01807426⟩
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