Hi all,(adsbygoogle = window.adsbygoogle || []).push({});

I'm little confused about the maximal appropriate value for the SM Higgs quartic coupling and the Higgs mass = 125 GeV. that as ## \lambda =m_h^2 / 2 v^2 \simeq 0.1 ## for ##v = 246 ~ GeV##.

But according to the perturbation theory, ##\lambda ## enters into higher order corrections as ##\lambda/(4 \pi)##. So that the very generic limit from perturbativity constraint is ## \lambda/(4 \pi) < 1 ## or ## \lambda < 4 \pi ##.

Now after loop correction, say ## \lambda = 10 ##, it won't any more account for the SM Higgs mass !

Best.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# I SM- Higgs quartic coupling

Have something to add?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**