Livingston, K., Lutterer, S., MacGregor, I. J.D. et al. (16 more authors) (2020) Measurement of the beam-helicity asymmetry in photoproduction of π0η pairs on carbon, aluminum, and lead. Physics Letters B. 135243. ISSN 0370-2693
Abstract
The beam-helicity asymmetry was measured, for the first time, in photoproduction of $\pi^{0}\eta$ pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to an earlier measurement on a free proton and to the corresponding theoretical calculations. The Mainz model is used to predict the beam-helicity asymmetry for the nuclear targets. The present results indicate that the photoproduction mechanism for $\pi^{0}\eta$ pairs on nuclei is similar to photoproduction on a free nucleon. This process is dominated by the $D_{33}$ partial wave with the $\eta\Delta(1232)$ intermediate state.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Author(s). Published by Elsevier B.V 8 pages, 2 figures. arXiv admin note: text overlap with arXiv:1803.00727 |
Keywords: | nucl-ex |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 28 Jan 2020 17:00 |
Last Modified: | 05 Jan 2025 00:25 |
Published Version: | https://doi.org/10.1016/j.physletb.2020.135243 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.physletb.2020.135243 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:156197 |
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