# Is there new particle running in the loop-induced $H\gamma\gamma$ and $Hgg$ vertex?

## TL;DR

This paper discusses how loop-induced Higgs couplings to gluons and photons are sensitive to new physics, proposing ratios of Higgs signal strengths as tools to identify contributions from potential new particles.

## Contribution

It highlights the potential of specific Higgs signal strength ratios to distinguish new particle effects in loop-induced Higgs couplings from other new physics sources.

## Key findings

- Ratios of Higgs signal strengths can disentangle new particle contributions.
- Loop-induced Higgs couplings are sensitive probes of new physics.
- Proposed methods aid in identifying the nature of new physics effects.

## Abstract

Loop-induced $Hgg$ and $H\gamma\gamma$ coupling play an important role in the Higgs production and decay at the LHC. These vertices can be affected by various New Physics contributions, including new particles, anomalous Yukawa couplings, and so on. We point out some ratios of the Higgs signal strengths could help disentangle the contributions of new particles from other sources of New Physics.