How to Calculate the Loop Function for Higgs Decay to Photons or Gluons?

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Discussion Overview

The discussion revolves around calculating the loop function for Higgs decay to photons or gluons, specifically through the t quark. Participants seek references and methods for this calculation, exploring both decay and production scenarios.

Discussion Character

  • Exploratory, Technical explanation, Homework-related

Main Points Raised

  • Safinaz inquires about methods or references for calculating the loop function for Higgs decay to photons or gluons via the t quark.
  • One participant suggests that the calculation may be analogous to Higgs production, proposing to replace gluons with photons.
  • Safinaz clarifies the interest in both decay and production loop functions.
  • Another participant recommends a specific resource related to Higgs production through gluon fusion and suggests looking at code from generators for further assistance.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the calculation method, and multiple viewpoints regarding the relationship between decay and production remain present.

Contextual Notes

Limitations include potential dependencies on specific definitions of loop functions and the context of decay versus production calculations, which remain unresolved.

Safinaz
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Hi all,

Has anyone know how to calculate the loop function of Higgs decay to photons/ gluons by t quark , or a useful reference.

Cheers,
Safinaz
 
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Isn't it exactly the same as for the production?

Replace the gluons by photons.
 
Yes, I mean the loop function of the decay or production ..

S
 
Google this.
Higgs production through gluon fusion at leading order - Nikhef
That is one that I had looked at before. Alternatively you could always look at the code for production or decay in one of the generators if you get stuck.

Hope it helps
 
Thanks .. I will try this.

Bests,
S
 

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