Ponente
Emanuele Messina
(Univ Catania and INFN)
Descripción
The study of the stability condition of the Electroweak vacuum is an
essential tool for the comprehension of the non-perturbative
interplay between the Standard Model and its UV completions
at high energy (Planck) scales.
The role played by the IR parameters, such as Higgs and top masses,
on the stability analysis has been widely investigated.
In our contribution we show that the presence of new physics at
very high energy scales could also affect the stability condition.
We analyze how different (toy) implementations of some UV completions
of the Standard Model are responsible for the appearance of new kind
of "faster" (most likely) field configurations dominating the transition
amplitude for the decay of the electroweak (metastable) vacuum.
Therefore, for different values of the Higgs and top masses, we compute the tunneling rate and and evaluate the stability diagram for these different new physics scenarios thus showing the "non-universality" of the stability condition.
Autor primario
Emanuele Messina
(Univ Catania and INFN)
