Difference between revisions of "Measurement of the beam asymmetry Σ for π^0 and η photoproduction on the proton at E sub γ=9 GeV"
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== Abstract == | == Abstract == | ||
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| + | We report measurements of the photon beam asymmetry $\Sigma$ for the reactions $\vec{\gamma}p\to\pi^0p$ and $\vec{\gamma}p\to\eta p$ from the GlueX experiment using a 9 GeV linearly-polarized, tagged photon beam incident on a liquid hydrogen target in Jefferson Lab's Hall D. The asymmetries, measured as a function of the proton momentum transfer, possess greater precision than previous $\pi^0$ measurements, and are the first $\eta$ measurements in this energy regime. The results are compared with theoretical predictions based on $t$-channel, quasi-particle exchange and constrain the axial-vector component of the neutral meson production mechanism in these models. | ||
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== Figures and captions == | == Figures and captions == | ||
Revision as of 22:29, 20 November 2017
Abstract
