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"
From GlueXWiki
(→Abstract) |
(→Abstract) |
||
| Line 3: | Line 3: | ||
== Abstract == | == Abstract == | ||
| − | <span style="font-family:Times;"> We report measurements of the photon beam asymmetry Σ for the reactions | + | <span style="font-family:Times;"> We report measurements of the photon beam asymmetry Σ for the reactions γ⃗p→π<sup>0</sup>p and γ⃗p→ηp 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 π<sup>0</sup> measurements, and are the first η 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. </span> |
== Figures and captions == | == Figures and captions == | ||
Revision as of 22:40, 20 November 2017
Abstract
We report measurements of the photon beam asymmetry Σ for the reactions γ⃗p→π0p and γ⃗p→ηp 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 π0 measurements, and are the first η 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.
