How heavy can dark matter be? Constraining colourful unitarity with SARAH

Mark D. Goodsell (1) , Rhea Moutafis (1)

1 LPTHE - Laboratoire de Physique Théorique et Hautes Energies

We describe the automation of the calculation of perturbative unitarity constraints including scalars that have colour charges, and its release in SARAH4.14.4. We apply this, along with vacuum stability constraints, to a simple dark matter model with colourful mediators and interesting decays, and show how it leads to a bound on a thermal relic dark matter mass well below the classic Griest-Kamionkowski limit.

Mots clés: unitarity: constraint; dark matter: mass; vacuum: stability; charge: color; mediation; thermal

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

Mark D. Goodsell, Rhea Moutafis. How heavy can dark matter be? Constraining colourful unitarity with SARAH. European Physical Journal C: Particles and Fields, 2021, 81 (9), pp.808. ⟨10.1140/epjc/s10052-021-09597-5⟩. ⟨hal-03115840⟩