A study of the process $e^+ +e^- \to e^+ +e^- p \bar {p}$ by the two-photon mechanism $\gamma \gamma \to p \bar {p}$ at high energies

TL;DR

This study analyzes the production of proton-antiproton pairs via two-photon interactions in electron-positron collisions, calculating cross sections at various energies and comparing with experimental data to validate the theoretical model.

Contribution

It provides detailed calculations of differential and total cross sections for $\gamma \gamma o par{p} ext{ extquotesingle}$ at high energies, extending understanding of two-photon production mechanisms.

Findings

Calculated cross sections agree with experimental data.

Cross sections vary with photon energy and angle.

Results support the two-photon mechanism as a valid description.

Abstract

In this paper we consider the exclusive production of proton-antiproton pairs in the interaction between two quasireal photons in $e^+e^-$ collision. The differential and total cross section of the process $\gamma \gamma \to p\bar {p}$ at a beam energy of photons from 2.1 GeV to 4.5 GeV in the center-of-mass and for different values of $|cos\theta^{\ast}|$ is calculated. At energy $<\sqrt {s_{e^+e^-}}>$=197 \,\,GeV the total cross section process o0f the $e^+ +e^- \to e^+ +e^- +p +\bar {p}$ is calculated by the two-photon mechanism. The results are in satisfactory agreement with the experimental data.