# Complementary bound on $W^\prime$ mass from Higgs to diphoton decay

## TL;DR

This paper proposes a method to constrain the mass of a hypothetical $W'$ boson using Higgs to diphoton decay measurements, highlighting the importance of precision Higgs data in exploring new physics beyond the Standard Model.

## Contribution

It introduces a generic approach to set bounds on $W'$ mass from Higgs decay data, applicable across various models with $W'$ bosons.

## Key findings

- Derived bounds on $W'$ mass from Higgs to diphoton decay data.
- Demonstrated the method's applicability to diverse models with $W'$ bosons.
- Showed the significance of Higgs decay measurements in probing new physics scales.

## Abstract

Using the left-right symmetric model as an illustrative example, we suggest a simple and straightforward way of constraining the $W'$ mass directly from the decay of the Higgs boson to two photons. The proposed method is generic and applicable to a diverse range of models with a $W'$-boson that couples to the SM-like Higgs boson. Our analysis exemplifies how the precision measurement of the Higgs to diphoton signal strength can have a pivotal role in probing the scale of new physics.