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

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 $\gamma p$ 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 $\omega\pi^0$ dataset, concentrating on measuring the interference between the $b_1(1235)$ and an excited $J^{PC}=1^{--}$ vector resonance.

Authors

Publication Details

Published
2025-02-07
DOI
https://doi.org/10.22323/1.465.0039
Citations
1
Primary Topic
Quantum Chromodynamics and Particle Interactions
Type
article
Field-Weighted Citation Impact
1.87

Funders

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article

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

K. Scheuer
1 citations
Quantum Chromodynamics and Particle Interactions
1.87
article

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

K. Scheuer
article en
1 citations

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 $\gamma p$ 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 $\omega\pi^0$ dataset, concentrating on measuring the interference between the $b_1(1235)$ and an excited $J^{PC}=1^{--}$ vector resonance.

U.S. Department of Energy, Office of Science, Nuclear Physics
Openalex Percentile: Top 16%
Quantum Chromodynamics and Particle Interactions
1.87
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Amplitude Analysis of $\omega\pi^0$ Photoproduction at GlueX — K. Scheuer · (2025) | TGRS Research Map | TGRS