Naslov
Higgs mass prediction from the cosmological constant running

Autori
Melić, Blaženka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, pp prezentacija, znanstveni

Skup
PASCOS 2017

Mjesto i datum
Madrid, Španjolska, 19.06.2017. - 23.06.2017

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
cosmological constant ; renormalization group running ; Higgs mass

Sažetak
We revisit the decoupling effects associated with heavy particles in the renormalization group running of the vacuum energy in a mass- dependent renormalization scheme. We find the running of the vacuum energy stemming from the Higgs condensate in the entire energy range and show that it behaves as expected from the simple dimensional arguments meaning that it exhibits the quadratic sensitivity to the mass of the heavy particles in the infrared regime. The consequence of such a running to the fine-tuning problem with the measured value of the Cosmological Constant is analyzed and the constraint on the mass spectrum of a given model is derived. We show that in the Standard Model (SM) this fine-tuning constraint is not satisfied while in the massless theories this constraint formally coincides with the well known Veltman condition. We also provide a remarkably simple extension of the SM where saturation of this constraint enables us to predict the radiative Higgs mass correctly. Generalization to constant curvature spaces is also given.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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