Al Ghoul, H., Anassontzis, E. G., Austregesilo, A. et al. (114 more authors) (2017) Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. Physical Review C. 042201. ISSN 2469-9993
Abstract
We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→pη 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, quasiparticle exchange and constrain the axial-vector component of the neutral meson production mechanism in these models.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | ©2017 American Physical Society |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Biology (York) The University of York > Faculty of Arts and Humanities (York) > Music (York) The University of York > Faculty of Sciences (York) > Chemistry (York) The University of York > Faculty of Sciences (York) > Electronic Engineering (York) The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 17 Sep 2018 09:20 |
Last Modified: | 16 Oct 2024 15:04 |
Published Version: | https://doi.org/10.1103/PhysRevC.95.042201 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevC.95.042201 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135774 |