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 == | ||
| − | + | We report measurements of the photon beam asymmetry <math>\Sigma</math> for the reactions <math>\vec{\gamma}p\to\pi^0p</math> and <math>\vec{\gamma}p\to\eta p</math> 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 <math>\pi^0</math> measurements, and are the first <math>\eta</math> measurements in this energy regime. The results are compared with theoretical predictions based on <math>t</math>-channel, quasi-particle exchange and constrain the axial-vector component of the neutral meson production mechanism in these models. | |
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| − | We report measurements of the photon beam asymmetry | + | |
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== Figures and captions == | == Figures and captions == | ||
Revision as of 22:30, 20 November 2017
Abstract
We report measurements of the photon beam asymmetry 
for the reactions 
and 
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 
measurements, and are the first 
measurements in this energy regime. The results are compared with theoretical predictions based on 
-channel, quasi-particle exchange and constrain the axial-vector component of the neutral meson production mechanism in these models.
