Document Type



Doctor of Philosophy (PhD)



First Advisor's Name

Misak Sargsian

First Advisor's Committee Title

Committee member

Second Advisor's Name

Joerg Reinhold

Second Advisor's Committee Title

Committee member

Third Advisor's Name

Lei Guo

Third Advisor's Committee Title

Committee member

Fourth Advisor's Name

Jose Allmirall

Fourth Advisor's Committee Title

Committee member

Fifth Advisor's Name

Werner Boeglin

Fifth Advisor's Committee Title

Committee chair


Photo-production, Eta, Differential, Cross sections, GlueX

Date of Defense



In this work we present the GlueX experiment extensive high statistics measurements of the η meson photo-production differential cross sections at beam energies between 3 GeV and 11.6 GeV. We compared the low energy (2.9 GeV< Eγ < 5.9 GeV) differential cross section (dσ/dΩ) results to previous experimental results from the Continuous Electron Beam Accelerator Facility (CEBAF) Large Acceptance Spectrometer (CLAS) collaboration. These (dσ/dΩ) results are also compared to the theoretical isobar model EtaMAID2018 by Tiator et. al., and the Regge model by Nys et. al. The differential cross section dσ/dt is also presented and compared to the previous experimental results, and to the above models, in addition to a model by J. M. Laget. The high energy (6.2 GeV< Eγ < 11.6 GeV) cross section results (dσ/dΩ, and dσ/dt) are compared to the isobar model EtaMAID2018. These results will provide new constraints on η photo-production mechanisms and high energy t- channel processes.



Included in

Nuclear Commons



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