Meson Spectroscopy in Photo-production at CLAS

TL;DR

This paper reports on the investigation of excited meson production via photo-production at CLAS, analyzing multi-pion final states to extract resonance parameters using Partial Wave Analysis in the 1-2 GeV mass range.

Contribution

It presents new data and analysis techniques for meson resonance parameters in photo-production experiments at CLAS.

Findings

Data distributions characterized for neutral and charged 3-pion final states.

Resonance parameters extracted using Partial Wave Analysis.

Insights into meson spectroscopy in the 1-2 GeV range.

Abstract

Photo-production of excited mesons in the 1-2 GeV mass range decaying via multi-pion or multi-kaon emission has been investigated at the TJNAF\thanks{This work was supported by the U.S. Department of Energy and The U.S. National Science Foundation.} experiment E01-017 (g6c) in the $4.8-5.4$ GeV photon beam energy range. The main objective of the experiment is to extract resonance parameters of the produced states by way of a Partial Wave Analysis (PWA) technique. In this paper, we will focus on the general characteristics of the data distributions in both the neutral and charged 3-pion final states, i.e. $\pi^{+}\pi^{-}\pi^{0}$ and $\pi^{+}\pi^{+}\pi^{-}$.