Abstract
AbstractWe 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 $$95\%$$
95
%
CL constraints on the LIV energy scale. The obtained shower constraint $$E_\textrm{LIV} \gtrsim \mathcal {O} \left( 10^{20} \text{ GeV }\right) $$
E
LIV
≳
O
10
20
GeV
is significantly weaker than existing birefringence constraints but is independent.
Funder
Russian Science Foundation
Publisher
Springer Science and Business Media LLC