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arXiv · 2312.06307

Shower formation constraints on cubic Lorentz Invariance Violation parameters in quantum electrodynamics

Petr Satunin·Andrey Sharofeev
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Abstract

We present shower formation constraints on the Lorentz Invariance Violation (LIV) energy scale for photons with cubic dispersion relation from recent gamma ray observations in $100$ TeV -- PeV energy range by LHAASO observatory. We assume Myers-Pospelov effective field theory framework, and calculate the suppression for the Bethe-Heitler process which is mainly responsible for the formation of photon-initiated atmosphere showers. Comparing the high-energy photon events with the suppressed flux predictions we obtain $95\%$ CL constraints on the LIV energy scale. The obtained shower constraint $E_{\rm LIV} \gtrsim \mathcal{O} \left( 10^{20} \mbox{ GeV}\right)$ is significantly weaker than existing birefringence constraints but is independent.

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Petr Satunin, Andrey Sharofeev. 2023-12-11. Shower formation constraints on cubic Lorentz Invariance Violation parameters in quantum electrodynamics. https://arxiv.org/abs/2312.06307

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