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Probing Lorentz invariance via diphoton decays of the Higgs boson

V. Alan Kostelecký1, Connor A. Petway1, and Nathaniel Sherrill2

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Phys. Rev. D 114, 075012 – Published 9 October, 2026

DOI: https://doi.org/10.1103/ff78-jw1c

Abstract

The prospects for observing small departures from Lorentz invariance are studied using effective interactions of the Higgs boson with photons. A single operator of mass-dimension five suffices to describe all leading signatures of Lorentz violation in the diphoton decay channel. Comparison of the theoretical modified decay rates with observed signal strengths measured by the ATLAS and CMS Collaborations at the Large Hadron Collider indicates an estimated attainable sensitivity to the corresponding coefficients for Lorentz violation of order 10−4  GeV−1.

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Phys. Rev. D 114, 075012– Published 9 October, 2026
  • Received 23 July 2026
  • Accepted 15 September 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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