Calculating Width of SM Higgs Two-Photon Channel

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SUMMARY

The calculation of the width of the two-photon channel of the Standard Model (SM) Higgs involves complex dimensional regularization techniques. Key contributions to this calculation come from one-loop processes involving leptons and W bosons. Reference materials such as "Peskin and Schroeder" and "The Higgs Hunter's Guide" provide essential intermediate steps and insights for this calculation. Mastery of these concepts is crucial for accurate computation of the Higgs decay width.

PREREQUISITES
  • Understanding of dimensional regularization techniques
  • Familiarity with one-loop quantum field theory calculations
  • Knowledge of the Standard Model Higgs boson properties
  • Experience with particle decay processes and their calculations
NEXT STEPS
  • Study the dimensional regularization method in quantum field theory
  • Review one-loop Feynman diagrams involving leptons and W bosons
  • Examine the decay processes of the SM Higgs in "The Higgs Hunter's Guide"
  • Explore advanced topics in particle physics related to Higgs boson decay channels
USEFUL FOR

Particle physicists, graduate students in theoretical physics, and researchers focusing on Higgs boson properties and decay mechanisms will benefit from this discussion.

bonaventura2
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Hello!
I would like to know how to calculate the width of the two-photon channel of the SM Higgs. It seems to be quite a tedious calculation with a dimensional regularization to perform. There are two one-loop contributions (leptons and W). Thank you very much in advance for your help!
B.
(cf. questions e and f of the final project p.777 in Peskin and Schroeder)
 
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I had too much trouble dealing with the two-gluon channel to go on to the two-photon decay. I remember that the Higgs Hunter's Guide had some intermediate steps in this calculation, though. Have you made any progress in the last few weeks?
 

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