Sommaire:

Recently, the Cosmological Relaxation idea has been proposed as a new mechanism to generate a naturally small electroweak scale. It exploits the coupling of the Higgs to an axion-like field and a long era in the early universe where the axion unchains a dynamical screening of the Higgs mass. I will present in details the Relaxation idea and its minimal implementations. Moreover I will discuss some extensions of the original models that can postpone any sign of new physics up to a rather large scale, 10^9 GeV, except for two very light and weakly coupled axion-like states.

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Pour plus d'informations, merci de contacter Frigerio M.