Strangeness Photoproduction on Quasifree Neutrons

TL;DR

This paper discusses the potential of strangeness photoproduction reactions on quasifree neutrons to study nucleon resonances above 1.7 GeV and explores preliminary feasibility results at the A2 experiment.

Contribution

It presents the first feasibility studies for measuring strangeness photoproduction on quasifree neutrons at MAMI, aiming to enhance understanding of nucleon resonances.

Findings

Feasibility of measuring reactions on quasifree neutrons demonstrated.

Preliminary data shows potential for isospin decomposition.

Supports future complete experiments in pseudoscalar meson photoproduction.

Abstract

Strangeness photoproduction in the elementary reactions $\gamma N\rightarrow KY$ offers the possibility to study nucleon resonances in the mass region above 1.7 GeV, where the number of states and their properties are still under debate. These reactions could allow the first 'complete' experiment in pseudoscalar meson photoproduction due to the easier access to recoil polarization observables in experiments. In addition to measurements on proton targets, a full isospin decomposition of the $I=1/2$ electromagnetic amplitudes requires also data obtained from quasifree neutron targets. This contribution shows first preliminary results on feasibility studies for such measurements at the A2 experiment at MAMI.