2 papers
astro-ph.HE2025
Bilateral constraints on proton Lorentz violation effects
Ping He, Bo-Qiang Ma
Since the early reports of events beyond the Greisen-Zatsepin-Kuzmin (GZK) cutoff, the investigation of ultrahigh-energy cosmic rays has emerged as a fundamental method for testing…
hep-ph2024
Abnormal threshold behaviors of photo-pion production off the proton in the GZK region
Ping He, Bo-Qiang Ma
The confirmation of the existence of GZK cut-off was tortuous, leading to activities to explore new physics, such as the cosmic-ray new components, unidentified cosmic-ray origins,…