Photoproduction of two charged pions off protons in the resonance region

2024/11/23 by A. Sarantsev, Sarantsev, A. V., E. Klempt +11
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2411.15423

openalex publication_date 2024/11/23 · openalex created_date 2025/03/31 · openalex updated_date 2026/08/01

Abstract

Photoproduction of charged pions pairs off protons is studied within the invariant masses of the final state hadrons from 1.6 to 2.4 GeV at the Thomas Jefferson National Accelerator Facility with the CLAS detector. The data are included in the Bonn-Gatchina coupled-channel analysis and provide the information necessary to determine the branching fractions for most known nucleon and Delta resonances. Branching ratios are obtained here from an event based likelihood fit.

Related

• Two Pion Photo- and Electroproduction with CLAS
• Measurement of single- and double-polarization observables in the photoproduction of π⁺π^-~meson pairs off the proton using CLAS at Jefferson Laboratory
• The nucleon resonance structure from exclusive π⁺π^-p photo-/electroproduction off protons
• Studying π⁺π^- photoproduction beyond Pomeron exchange
• Studying the production mechanisms of light meson resonances in two-pion photoproduction