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Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV

H. Al Ghoul, E. G. Anassontzis, A. Austregesilo, F. Barbosa, A. Barnes, T. D. Beattie, D. W. Bennett, V. V. Berdnikov, T. Black, W. Boeglin, et al. (2017) PHYSICAL REVIEW C. 95(4).
abstract
We report measurements of the photon beam asymmetry Sigma for the reactions (gamma) over right arrowp -> p pi(0) and gamma p -> p eta 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 pi(0) measurements and are the first. 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.
Please use this url to cite or link to this publication:
author
organization
alternative title
Measurement of the beam asymmetry Sigma for pi(0) and eta photoproduction on the proton at E-gamma=9 GeV
year
type
journalArticle (original)
publication status
published
subject
keyword
GLUEX, CALORIMETER, HYDROGEN, ENERGY
journal title
PHYSICAL REVIEW C
Phys. Rev. C
volume
95
issue
4
article number
42201
Web of Science type
Article
Web of Science id
000400140500002
ISSN
2469-9985
DOI
10.1103/physrevc.95.042201
language
English
UGent publication?
yes
classification
U
id
8523610
handle
http://hdl.handle.net/1854/LU-8523610
date created
2017-06-13 13:53:10
date last changed
2017-08-08 09:07:43
@article{8523610,
  abstract     = {We report measurements of the photon beam asymmetry Sigma for the reactions (gamma) over right arrowp -{\textrangle} p pi(0) and gamma p -{\textrangle} p eta 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 pi(0) measurements and are the first. 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.},
  articleno    = {42201},
  author       = {Al Ghoul, H. and Anassontzis, E. G. and Austregesilo, A. and Barbosa, F. and Barnes, A. and Beattie, T. D. and Bennett, D. W. and Berdnikov, V. V. and Black, T. and Boeglin, W. and Briscoe, W. J. and Brooks, W. K. and Cannon, B. E. and Chernyshov, O. and Chudakov, E. and Crede, V. and Dalton, M. M. and Deur, A. and Dobbs, S. and Dolgolenko, A. and Dugger, M. and Dzhygadlo, R. and Egiyan, H. and Eugenio, P. and Fanelli, C. and Foda, A. M. and Frye, J. and Furletov, S. and Gan, L. and Gasparian, A. and Gerasimov, A. and Gevorgyan, N. and Goetzen, K. and Goryachev, V. S. and Guo, L. and Hakobyan, H. and Hardin, J. and Henderson, A. and Huber, G. M. and Ireland, D. G. and Ito, M. M. and Jarvis, N. S. and Jones, R. T. and Kakoyan, V. and Kamel, M. and Klein, F. J. and Kliemt, R. and Kourkoumeli, C. and Kuleshov, S. and Kuznetsov, I. and Lara, M. and Larin, I. and Lawrence, D. and Levine, W. I. and Livingston, K. and Lolos, G. J. and Lyubovitskij, V. and Mack, D. and Mattione, P. T. and Matveev, V. and McCaughan, M. and McCracken, M. and McGinley, W. and McIntyre, J. and Mendez, R. and Meyer, C. A. and Miskimen, R. and Mitchell, R. E. and Mokaya, F. and Moriya, K. and Nerling, F. and Nigmatkulov, G. and Ochoa, N. and Ostrovidov, A. I. and Papandreou, Z. and Patsyuk, M. and Pedroni, R. and Pennington, M. R. and Pentchev, L. and Peters, K. J. and Pooser, E. and Pratt, B. and Qiang, Y. and Reinhold, J. and Ritchie, B. G. and Robison, L. and Romanov, D. and Salgado, C. and Schumacher, R. A. and Schwarz, C. and Schwiening, J. and Semenov, A. Yu. and Semenova, I. A. and Seth, K. K. and Shepherd, M. R. and Smith, E. S. and Sober, D. I. and Somov, A. and Somov, S. and Soto, O. and Sparks, N. and Staib, M. J. and Stevens, J. R. and Strakovsky, I. I. and Subedi, A. and Tarasov, V. and Taylor, S. and Teymurazyan, A. and Tolstukhin, I. and Tomaradze, A. and Toro, A. and Tsaris, A. and Vasileiadis, G. and Vega, I. and Walford, N. K. and Werthm{\"u}ller, D. and Whitlatch, T. and Williams, M. and Wolin, E. and Xiao, T. and Zarling, J. and Zhang, Z. and Zihlmann, B. and Mathieu, V. and Nys, Jannes},
  issn         = {2469-9985},
  journal      = {PHYSICAL REVIEW C},
  keyword      = {GLUEX,CALORIMETER,HYDROGEN,ENERGY},
  language     = {eng},
  number       = {4},
  title        = {Measurement of the beam asymmetry \ensuremath{\Sigma} for \ensuremath{\pi}0 and \ensuremath{\eta} photoproduction on the proton at E\ensuremath{\gamma}=9 GeV},
  url          = {http://dx.doi.org/10.1103/physrevc.95.042201},
  volume       = {95},
  year         = {2017},
}

Chicago
Al Ghoul, H., E. G. Anassontzis, A. Austregesilo, F. Barbosa, A. Barnes, T. D. Beattie, D. W. Bennett, et al. 2017. “Measurement of the Beam Asymmetry Σ for Π0 and η Photoproduction on the Proton at Eγ=9 GeV.” Physical Review C 95 (4).
APA
Al Ghoul, H., Anassontzis, E. G., Austregesilo, A., Barbosa, F., Barnes, A., Beattie, T. D., Bennett, D. W., et al. (2017). Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. PHYSICAL REVIEW C, 95(4).
Vancouver
1.
Al Ghoul H, Anassontzis EG, Austregesilo A, Barbosa F, Barnes A, Beattie TD, et al. Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. PHYSICAL REVIEW C. 2017;95(4).
MLA
Al Ghoul, H., E. G. Anassontzis, A. Austregesilo, et al. “Measurement of the Beam Asymmetry Σ for Π0 and η Photoproduction on the Proton at Eγ=9 GeV.” PHYSICAL REVIEW C 95.4 (2017): n. pag. Print.