Single Transverse-Spin Asymmetry in Hard-Exclusive Meson Electroproduction in the Backward Region

TL;DR

This paper explores how measuring single transverse-spin asymmetry in backward-region meson electroproduction can distinguish between soft baryon exchange and hard scattering mechanisms, advancing understanding of nucleon structure.

Contribution

It introduces the potential of using single transverse-spin asymmetry as a tool to differentiate between soft and hard processes in backward meson electroproduction.

Findings

Asymmetry can discriminate between soft and hard contributions.

Backward-region measurements provide insights into nucleon structure.

Potential to refine theoretical models of meson electroproduction.

Abstract

We discuss the relevance of studying single transverse-spin asymmetry in hard-exclusive meson electroproduction in the backward region. Such an asymmetry could help us discriminate between contributions from a soft baryon exchange in the u-channel and a hard parton-induced scattering.