Charge-odd correlation of lepton and pion pair production in electron-proton scattering

TL;DR

This paper investigates charge-odd correlations in electron-proton scattering to measure current correlations, providing a theoretical framework and numerical estimates suggesting experimental measurability in specific scattering processes.

Contribution

It introduces a method to analyze charge-odd correlations using structure functions and light-cone projections, with approximations for proton and pion, to facilitate experimental measurements.

Findings

Charge-odd effects are potentially measurable in ep -> 2 pi X experiments.

Theoretical framework involves 14 structure functions describing correlations.

Numerical estimates support experimental feasibility.

Abstract

Charge-odd correlation of the charged pair components produced at electron-proton scattering can measure three current correlation averaged by proton state. In general these type correlation can be described by 14 structure functions. We restrict here by consideration of inclusive distributions of a pair components, which is the light-cone projection of the relevant hadronic tensor. Besides we consider the point-like approximation for proton and pion. Numerical estimations show that charge-odd effects can be measured in exclusive ep -> 2 pi X experiments.