https://doi.org/10.1140/epjc/s10052-024-13152-3
Regular Article - Theoretical Physics
Shower formation constraints on cubic Lorentz invariance violation parameters in quantum electrodynamics
1
Institute for Nuclear Research, Russian Academy of Sciences, 60th October Anniversary Prospect, 7a, 117312, Moscow, Russia
2
Department of Particle Physics and Cosmology, Physics Faculty, Moscow State University, Leninskiye Gory, 119991, Moscow, Russia
Received:
27
February
2024
Accepted:
21
July
2024
Published online:
10
August
2024
We present shower formation constraints on the Lorentz invariance violation (LIV) energy scale for photons with a cubic dispersion relation from recent gamma-ray observations in the 100 TeV–PeV energy range by the Large High Altitude Air Shower Observatory (LHAASO). We assume a 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 atmospheric showers. Comparing the high-energy photon events with the suppressed flux predictions, we obtain 
CL constraints on the LIV energy scale. The obtained shower constraint 
is significantly weaker than existing birefringence constraints but is independent.
© The Author(s) 2024
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