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.
Asymptotically safe standard model extensions? / Pelaggi, G. M.; Plascencia, A. D.; Salvio, A.; Sannino, F.; Smirnov, J.; Strumia, A.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 97:9(2018). [10.1103/PhysRevD.97.095013]
Asymptotically safe standard model extensions?
Sannino F.;
2018
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
