First measurement of target and beam-target asymmetries in the $\gamma p\to \pi^0\eta p$ reaction

TL;DR

This paper reports the first measurements of target and beam-target asymmetries in the gamma p to pi0 eta p reaction, providing new insights into the reaction dynamics and partial wave contributions.

Contribution

It presents the first experimental data on asymmetries for this reaction at photon energies 1050-1450 MeV, confirming dominance of the Delta 3/2^- amplitude.

Findings

Reaction is dominated by the Delta 3/2^- amplitude

Data are sensitive to small contributions from other partial waves

Measurements were performed at the Mainz Microtron MAMI

Abstract

The first data on target and beam-target asymmetries for the $\gamma p\to\pi^0\eta p$ reaction at photon energies from 1050 up to 1450 MeV are presented. The measurements were performed using the Crystal Ball and TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. The general assumption that the reaction is dominated by the $\Delta 3/2^-$ amplitude is confirmed. The data are in particular sensitive to small contributions from other partial waves.