Higgs-Higgs Interaction. The One-Loop Amplitude in the Standard Model
  The amplitude of Higgs-Higgs interaction is calculated in the Standard Model in the framework of the Sirlin's renormalization scheme in the unitary gauge. The one-loop corrections for lambda, the constant of 4-chi interaction are compared with the previous results of L. Durand et al. obtained on using the technique of the equivalence theorem, and in the different gauges. 
Valeriy V. Dvoeglazov
hep-ph hep-th