Hi, I have a puzzle about the hierarchy problem of higgs mass. I don't understand why delta m is much larger than m. If we use MS bar scheme, the huge correction can be simply dropped and the higgs mass only get a small correction. You can also view the SM as an effecive field theory. In this way, there are infinite higher order nonrenormalizable coupling terms in the Langrangian. At low energy, these terms are suppressed by (E/Lambda)^n where E is the typical energy at low scale and Lambda is the Planck Scale. If we do the momentum integral in Higgs mass correction up to cutoff Lambda, the contributions from the higher order terms become O(1) order and are not suppressed. If we sum all these contributions, they will probably give a small correction to the Higgs mass. So I don't see why there is a hierarchy problem.