Exploring Resonance Structures in the Partial-Wave Analysis of ωπ⁰ Photoproduction at GlueX
by
NB2/158
RUB
Abstract:
The GlueX experiment at Jefferson Lab seeks to map out the spectrum of light mesons produced from a linearly polarized photon beam. The production and decays of a light meson resonance X, such as γp→ Xp' → ωπ⁰ p’, can be modeled with polarized vector-pseudoscalar amplitudes, which can describe the contribution of individual amplitudes to the total measured intensity. In this work, we walk through the selections we apply, the intensity model and how we verify its capabilities, and finally present our mass-independent partial-wave analysis fit results, complete with systematic studies. Our primary result is the detection of a b₁(1235) meson interfering with a wide Jᴾ=1⁻ vector state. It provides precise experimental results that can be used as input to theoretical models of the reaction, yielding conclusions about the procedures responsible for how our universe behaves at its most basic level.