Looking for the gluon condensation signature in proton using the Earth limb gamma-ray spectra

TL;DR

This paper predicts a distinctive gamma-ray spectrum feature caused by gluon condensation in protons, which can be detected in Earth limb observations using space telescopes like DAMPE and CALET.

Contribution

It introduces a novel signature of gluon condensation effects in proton spectra and proposes observational methods to detect this feature in gamma-ray data.

Findings

Power-law gamma-ray spectrum with a sharp break at TeV energies

Gluon condensation causes a unique spectral signature in proton interactions

Detection of this signature can confirm gluon condensation effects in high-energy physics

Abstract

A new type of gamma ray spectrum is predicted in a general hadronic framework if considering the gluon condensation effects in proton. The result presents the power-law with a sharp break in the gamma ray spectra at the TeV-band. We suggest to probe this GC-signature in the Earth limb gamma-ray spectra using the DArk Matter Particle Explorer and the CALorimetric Electron Telescope on orbit.