Current Status of the Odderon

TL;DR

This paper reviews the current understanding of the Odderon, a C-odd amplitude in high-energy physics, discussing theoretical constraints, perturbative QCD models, and experimental evidence for its role in proton-proton scattering.

Contribution

It provides a comprehensive overview of the theoretical constraints and experimental indications of the Odderon, highlighting its significance in high-energy scattering processes.

Findings

Constraints on Odderon properties discussed

Perturbative QCD Odderon modeled by three-gluon exchange

Experimental signals suggest Odderon contribution in proton-proton scattering

Abstract

Odderon is the C-odd amplitude which does not die out (or die very slowly) with energy. We consider the constrains on the Odderon properties and the perturbative QCD Odderon given at the lowest $\alpha_s$ order by the three gluon exchange. Then we discuss the experimental indications for the Odderon contribution to high energy proton-proton elastic scattering and some other processes in which the Odderon may reveal itself.