Asymptotically Safe Standard Model Extensions?

We consider theories with a large number NF of charged fermions and compute the renormalization group equations for the gauge, Yukawa and quartic couplings resummed at leading order in 1/NF. We construct extensions of the standard model where SU(2) and/or SU(3) are asymptotically safe. When the same...

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Detalles Bibliográficos
Autores principales: Pelaggi, Giulio Maria, Plascencia, Alexis D., Salvio, Alberto, Sannino, Francesco, Smirnov, Juri, Strumia, Alessandro
Lenguaje:eng
Publicado: 2017
Materias:
hep-th
Particle Physics - Theory
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.97.095013
http://cds.cern.ch/record/2276640
Descripción
Sumario:We consider theories with a large number NF of charged fermions and compute the renormalization group equations for the gauge, Yukawa and quartic couplings resummed at leading order in 1/NF. We construct extensions of the standard model where SU(2) and/or SU(3) are asymptotically safe. When the same procedure is applied to the Abelian U(1) factor, we find that the Higgs quartic can not be made asymptotically safe and stay perturbative at the same time.

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