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  • Open Access

Higgs Boson Emerging from the Dark

Chengfeng Cai∥ and Hong-Hao Zhang*

Giacomo Cacciapaglia†

Martin Rosenlyst‡ and Mads T. Frandsen§

  • School of Physics, Sun Yat-Sen University, Guangzhou 510275, China

  • Institut de Physique des 2 Infinis (IP2I), CNRS/IN2P3, UMR5822, 69622 Villeurbanne, France and Université de Lyon, Université Claude Bernard Lyon 1, 69001 Lyon, France

  • CP3-Origins, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark

  • *Corresponding author. zhh98@mail.sysu.edu.cn
  • †Corresponding author. g.cacciapaglia@ipnl.in2p3.fr
  • ‡rosenlyst@cp3.sdu.dk
  • §frandsen@cp3.sdu.dk
  • ∥caichf3@mail.sysu.edu.cn
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Phys. Rev. Lett. 125, 021801 – Published 8 July, 2020

DOI: https://doi.org/10.1103/PhysRevLett.125.021801

Abstract

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.

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Outline

Information

Phys. Rev. Lett. 125, 021801– Published 8 July, 2020
  • Received 8 December 2019
  • Revised 9 April 2020
  • Accepted 15 June 2020
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