Abstract
In the presence of Lorentz violation, the Cerenkov-like process may become allowed for sufficiently energetic photons. Photons above the threshold would lose energy rapidly through pion emission. The fact that propagating photons with energies of up to 80 TeV survive to be observed on Earth allows us to place a one-sided constraint on an isotropic Lorentz-violating parameter at the level; this is more than an order of magnitude better than the best previous result.
- Received 15 March 2016
DOI:https://doi.org/10.1103/PhysRevD.93.105007
© 2016 American Physical Society
Physics Subject Headings (PhySH)
Particles & Fields