Publications
Publication Information
| Title | Beam asymmetry Sigma for the photoproduction of n and n' mesons at Ey=8.8GeV |
| Authors | Shankar Adhikari, Ahmed Ali, Moskov Amaryan, Alexander Austregesilo, Fernando Barbosa, Jason Barlow, Alexander Barnes, Edmundo Barriga Ruiz, Rebecca Barsotti, Tegan Beattie, Vladimir Berdnikov, Timothy Black, Werner Boeglin, Marie Boer, William Briscoe, Thomas Britton, William Brooks, Bradford Cannon, Nina Cao, Eugene Chudakov, Sebastian Cole, Olga Cortes Becerra, Volker Crede, Mark Dalton, T. Daniels, Alexandre Deur, Sean Dobbs, Alina Dolgolenko, Rupesh Dotel, Michael Dugger, Roman Dzhygadlo, Hovanes Egiyan, Tolga Erbora, Ashley Ernst, Paul Eugenio, Cristiano Fanelli, Stuart Fegan, Ahmed Foda, J. Foote, John Frye, Sergey Furletov, Liping Gan, Ashot Gasparian, Nerses Gevorgyan, Colin Gleason, Klaus Goetzen, Angelica Goncalves Dos Santos, Vladimir Goryachev, Lei Guo, Hayk Hakobyan, Abdennacer Hamdi, Garth Huber, Andrew Hurley, David Ireland, Mark Ito, Naomi Jarvis, R. Jones, Vanik Kakoyan, Grzegorz Kalicy, Mahmoud Kamel, C. Kourkoumelis, Sergey Kuleshov, Ilya Larin, David Lawrence, D. Lersch, H. Li, W. Li, B. Liu, Kenneth Livingston, George Lolos, V. Lyubovitskij, David Mack, Hrachya Marukyan, Paul Mattione, Vladimir Matveev, Michael McCaughan, Michael McCracken, William McGinley, Curtis Meyer, Rory Miskimen, R. Mitchell, Frank Nerling, Lawrence Ng, Alexander Ostrovidov, Zisis Papandreou, Maria Patsyuk, Churamani Paudel, Peter Hurck, Ron Pedroni, Lubomir Pentchev, Klaus Peters, William Phelps, Eric Pooser, Nian Qin, Joerg Reinhold, Barry Ritchie, Luke Robison, Dmitry Romanov, Christian Romero Vieyra, Carlos Salgado, Amy Schertz, Reinhard Schumacher, Joachim Schwiening, A. Semenov, Irina Semenova, Kamal Seth, X. Shen, Matthew Shepherd, Elton Smith, Daniel Sober, Alexander Somov, Sergey Somov, Orlando Soto Sandoval, Michael Staib, J. Stevens, Igor Strakovsky, Karthik Suresh, V. Tarasov, S. Taylor, Aram Teymurazyan, Annika Thiel, Georgios Vasileiadis, Timothy Whitlatch, Nilanga Wickramaarachchi, M. Williams, Ting Xiao, Y. Yang, Jonathan Zarling, Z. Zhang, G. Zhao, Q. Zhou, X. Zhou, Benedikt Zihlmann |
| JLAB number | JLAB-PHY-19-3117 |
| LANL number | arXiv:1908.05563 |
| Other number | DOE/OR/23177-4859 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | FG02-87ER4031 |
|
Journal Compiled for Physical Review C Volume 100 Page(s) 052201(R) Refereed | |
| Publication Abstract: | We report on the measurement of the beam asymmetry $\Sigma$ for the reactions $\vec{\gamma}p\rightarrow p\eta$ and $\vec{\gamma}p \rightarrow p\eta^{\prime}$ from the GlueX experiment, using an 8.2--8.8 GeV linearly polarized tagged photon beam incident on a liquid hydrogen target in Hall D at Jefferson Lab. These measurements are made as a function of momentum transfer $-t$, with significantly higher statistical precision than our earlier $\eta$ measurements, and are the first measurements of $\eta^{\prime}$ in this energy range. We compare the results to theoretical predictions based on $t$--channel quasi-particle exchange. We also compare the ratio of $\Sigma_{\eta}$ to $\Sigma_{\eta^{\prime}}$ to these models, as this ratio is predicted to be sensitive to the amount of $s\bar{s}$ exchange in the production. We find that photoproduction of both $\eta$ and $\eta^{\prime}$ is dominated by natural parity exchange with little dependence on $-t$. |
| Experiment Numbers: | |
| Group: | Hall D |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevC.100.052201 |
| Accepted Manuscript: | 1908.05563.pdf |
| Supporting Documents: | |
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