Article Dans Une Revue Physical Review Letters Année : 2020

Higgs Boson Emerging from the Dark

Chengfeng Cai
  • Fonction : Auteur
Hong-Hao Zhang
  • Fonction : Auteur
Martin Rosenlyst
  • Fonction : Auteur
Mads T. Frandsen
  • Fonction : Auteur

Résumé

We propose a new nonthermal mechanism of dark matter production based on vacuum misalignment. A global X-charge asymmetry is generated at high temperatures, under which both the will-be Higgs boson and the dark matter are charged. At lower energies, the vacuum changes alignment and breaks the U(1)X, leading to the emergence of the Higgs bosonand of a fraction of charge asymmetry stored in the stable dark matter relic. This mechanism can be present in a wide variety of models based on vacuum misalignment, and we demonstrate it in a composite Higgs template model, where all the necessary ingredients are naturally present. A light pseudo-scalar η is always predicted, with interesting implications for cosmology, future supernova observations and exotic Z→γη decays.

Dates et versions

hal-02409843 , version 1 (13-12-2019)

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Citer

Chengfeng Cai, Hong-Hao Zhang, Giacomo Cacciapaglia, Martin Rosenlyst, Mads T. Frandsen. Higgs Boson Emerging from the Dark. Physical Review Letters, 2020, 125 (2), pp.021801. ⟨10.1103/PhysRevLett.125.021801⟩. ⟨hal-02409843⟩
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