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Amplitude Analysis of $\omega\pi^0$ Photoproduction at GlueX

Nuclear Experiment 2024-11-18 v1 High Energy Physics - Experiment

Abstract

Excited meson states can often lie hidden within mass spectra beneath more dominant resonances, making it difficult to extract their physical properties. We can unveil these states through amplitude analysis, which disentangles the overlapping states via fits to their unique production and decay angular distributions. Understanding the light-meson spectrum is essential for confirming Lattice QCD predictions, especially in regards to the search for possible hybrid mesons. The Gluonic Excitation (GlueX) experiment at Jefferson Lab aids this search by studying the production of excited light mesons in γp\gamma p interactions in the 8.2 - 8.8 GeV photon-beam energy range. We show in these proceedings preliminary results of an amplitude analysis of a large ωπ0\omega\pi^0 dataset, concentrating on measuring the interference between the b1(1235)b_1(1235) and an excited JPC=1J^{PC}=1^{--} vector resonance.

Keywords

Cite

@article{arxiv.2411.09841,
  title  = {Amplitude Analysis of $\omega\pi^0$ Photoproduction at GlueX},
  author = {Kevin Scheuer},
  journal= {arXiv preprint arXiv:2411.09841},
  year   = {2024}
}

Comments

6 pages, 3 figures. Proceedings of the 10th International Conference on Quarks and Nuclear Physics (QNP 2024)