%0 Journal Article %A Al Ghoul, H. %A Anassontzis, E. G. %A Austregesilo, A. %A Barbosa, F. %A Barnes, A. %A Beattie, T. D. %A Bennett, D. W. %A Berdnikov, V. V. %A Black, T. %A Boeglin, W. %A Briscoe, W. J. %A Brooks, W. K. %A Cannon, B. E. %A Chernyshov, O. %A Chudakov, E. %A Crede, V. %A Dalton, M. M. %A Deur, A. %A Dobbs, S. %A Dolgolenko, A. %A Dugger, M. %A Dzhygadlo, R. %A Egiyan, H. %A Eugenio, P. %A Fanelli, C. %A Foda, A. M. %A Frye, J. %A Furletov, S. %A Gan, L. %A Gasparian, A. %A Gerasimov, A. %A Gevorgyan, N. %A Goetzen, K. %A Jarvis, N. S. %A Jones, R. T. %A Kakoyan, V. %A Kamel, M. %A Klein, F. J. %A Kliemt, R. %A Kourkoumeli, C. %A Kuleshov, S. %A Kuznetsov, I. %A Lara, M. %A Larin, I. %A Lawrence, D. %A Levine, W. I. %A Livingston, K. %A Lolos, G. J. %A Lyubovitskij, V. %A Mack, D. %A Mattione, P. T. %A Matveev, V. %A McCaughan, M. %A McCracken, M. %A McGinley, W. %A McIntyre, J. %A Mendez, R. %A Meyer, Curtis %A Miskimen, R. %A Mitchell, R. E. %A Mokaya, F. %A Moriya, K. %A Nerling, F. %A Nigmatkulov, G. %A Ochoa, N. %A Ostrovidov, A. I. %A Papandreou, Z. %A Patsyuk, M. %A Pedroni, R. %A Pennington, M. R. %A Pentchev, L %A Peters, K. J. %A Pooser, E. %A Pratt, B. %A Qiang, Y. %A Reinhold, J. %A Ritchie, B. G. %A Robison, L %A Romanov, D. %A Salgado, C. %A Schumacher, R. A. %A Schwarz, C. %A Schwiening, J. %A Semenov, A. Yu. %A Semenova, I. A. %A Seth, K. K. %A Shepherd, M. R. %A Smith, E. S. %A Sober, D. I. %A Somov, A. %A Somov, S. %A Soto, O. %A Sparks, N. %A Staib, M. J. %A Stevens, J. R. %A Strakovsky, I. I. %A Subedi, A. %A Tarasov, V. %A Taylor, S. %A Teymurazyan, A. %A Tolstukhin, I. %A Tomaradze, A. %A Toro, A. %A Tsaris, A. %A Vasileiadis, G. %A Vega, I %A Walford, N. K. %A Werthmuller, D. %A Whitlatch, T. %A Williams, M. %A Wolin, E. %A Xiao, T. %A Zarling, J. %A Zhang, Z. %A Zihlmann, B. %D 2017 %T Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV %U https://kilthub.cmu.edu/articles/journal_contribution/Measurement_of_the_beam_asymmetry_for_0_and_photoproduction_on_the_proton_at_E_9_GeV/4926080 %R 10.1184/R1/4926080.v1 %2 https://ndownloader.figshare.com/files/8287721 %K GlueX %K Beam Asymmetry %K Photoproduction %X
We report measurements of the photon beam asymmetry Σ for the reactions ⃗γp→pπ0 and ⃗γp→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.

%I Carnegie Mellon University