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Renormalization-group running of the cosmological constant and its implication for the Higgs boson mass in the Standard Model (CROSBI ID 94438)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Babić, Ana ; Guberina, Branko ; Horvat, Raul ; Štefančić, Hrvoje Renormalization-group running of the cosmological constant and its implication for the Higgs boson mass in the Standard Model // Physical review. D, Particles and fields, 6508 (2002), 8 Part B; 5002-x

Podaci o odgovornosti

Babić, Ana ; Guberina, Branko ; Horvat, Raul ; Štefančić, Hrvoje

engleski

Renormalization-group running of the cosmological constant and its implication for the Higgs boson mass in the Standard Model

The renormalization-group equation for the zero-point energies associated with vacuum fluctuations of massive fields from the Standard Model is examined. Our main observation is that at any scale the running is necessarily dominated by the heaviest degrees of freedom, in clear contradistinction with the Appelquist & Carazzone decoupling theorem. Such an enhanced running would represent a disaster for cosmology, unless a fine-tuned relation among the masses of heavy particles is imposed. In this way, we obtain m_H \simeq 550 GeV for the Higgs mass, a value safely within the unitarity bound, but far above the more stringent triviality bound for the case when the validity of the Standard Model is pushed up to the grand unification (or Planck) scale.

renormalization-group; vacuum fluctuations; Higgs; cosmological constant

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Podaci o izdanju

6508 (8 Part B)

2002.

5002-x

objavljeno

0556-2821

Povezanost rada

Fizika