Charge exchange $\rho^0 \pi^+ $ photoproduction and implications for searches of exotic meson

TL;DR

This paper investigates the photoproduction of $ ho^0 ext{ and } ext{pi}^+$ mesons to identify signals of an exotic meson state, emphasizing the role of photon polarization in detection.

Contribution

It introduces a method using photon polarization observables to enhance the search for exotic meson states in photoproduction experiments.

Findings

Linear photon polarization helps distinguish exotic meson signals.

Polarization observables are crucial for separating exotic waves from background.

Analysis suggests specific experimental setups for future searches.

Abstract

We analyze the process $\vec \gamma +p\to \rho^0 \pi^{+}n$ at low momentum transfer focusing on a possibility of production of an exotic $J^{PC}=1^{-+}$ meson state. In particular we discuss polarization observables and conclude that linear photon polarization is instrumental for separating of the exotic wave.