A photon-proton marriage

TL;DR

This paper investigates the invariant differential cross sections for charged hadron production in ep collisions at HERA, comparing particle spectra shapes with those in pp and gamma-gamma collisions to explore differences in particle production mechanisms.

Contribution

It introduces an analysis of hadron production in photon-proton collisions, highlighting differences from other collision types and proposing measurements to directly compare these spectra.

Findings

Different particle spectra shapes observed in ep, pp, and gamma-gamma collisions.

Potential for direct measurement of spectral differences in photon-proton collisions.

Insights into particle production mechanisms across different collision types.

Abstract

The shapes of invariant differential cross section for charged hadron production as function of hadron's transverse momentum and rapidity in ep collisions at HERA machine are considered. The particle spectra shapes observed in pp and gamma-gamma collisions before have shown very different properties. This difference could be directly measured in the "mixed" type collisions of photon and proton at HERA experiments.