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Article Dans Une Revue European Physical Journal C: Particles and Fields Année : 2022

Dark matter in the CP-violating NMSSM

Waqas Ahmed
  • Fonction : Auteur
Shoaib Munir
  • Fonction : Auteur

Résumé

In the Next-to-Minimal Supersymmetric Standard Model there is a strong correlation between the mass terms corresponding to the singlet Higgs and the singlino interaction states, both of which are proportional to the parameter $\kappa $. If this parameter is complex, explicit CP-violation occurs in the Higgs as well as the neutralino sectors of the model at the tree level, unlike in the minimal scenario. A small magnitude of $\kappa $ typically yields a ${{\mathcal {O}}}$(10) GeV lightest neutralino with a dominant singlino component. In such a scenario, the phase of $\kappa $, beside modifying the properties of the five Higgs bosons, can also have a crucial impact on the phenomenology of the neutralino dark matter. In this study we perform a first investigation of this impact on the relic abundance of the dark matter solutions with sub-100 GeV masses, obtained for parameter space configurations of the model that are consistent with a variety of current experimental data.
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Dates et versions

hal-03559935 , version 1 (06-02-2024)

Identifiants

Citer

Waqas Ahmed, Mark Goodsell, Shoaib Munir. Dark matter in the CP-violating NMSSM. European Physical Journal C: Particles and Fields, 2022, 82 (6), pp.539. ⟨10.1140/epjc/s10052-022-10449-z⟩. ⟨hal-03559935⟩
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