Cosmological Higgs-Axion Interplay for a Naturally Small Electroweak Scale Article Swipe

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Axion Physics Particle physics Electroweak interaction Higgs boson Electroweak scale Dark matter Physics beyond the Standard Model Higgs field Universe Astrophysics

J. R. Espinosa , Christophe Grojean , Giuliano Panico , Alex Pomarol , Oriol Pujolàs , Géraldine Servant ·

YOU? · · 2015 · Open Access · · DOI: https://doi.org/10.1103/physrevlett.115.251803 · OA: W768041595

Recently, a new mechanism to generate a naturally small electroweak scale has been proposed. It exploits the coupling of the Higgs boson to an axionlike field and a long era in the early Universe where the axion unchains a dynamical screening of the Higgs mass. We present a new realization of this idea with the new feature that it leaves no sign of new physics at the electroweak scale, and up to a rather large scale, 10^{9} GeV, except for two very light and weakly coupled axionlike states. One of the scalars can be a viable dark matter candidate. Such a cosmological Higgs-axion interplay could be tested with a number of experimental strategies.