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

Abstract

Using the left-right symmetric model as an illustrative example, we suggest a simple and straightforward way of constraining the $W^{\prime }$ 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 $W^{\prime }$-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.

8 pages, 2 figures

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• Updated constraints on $Z^{\prime }$ and $W^{\prime }$ bosons decaying into bosonic and leptonic final states using the Run 2 ATLAS data