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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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# Homework Help: Higgs gamma decay

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