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




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(2017)PHYSICAL REVIEW C.95(4). Mark 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: http://hdl.handle.net/1854/LU-8523610



Autor: H. Al Ghoul, E. G. Anassontzis, A. Austregesilo, F. Barbosa, A. Barnes, T. D. Beattie, D. W. Bennett, V. V. Berdnikov, T. Black, W

Fuente: https://biblio.ugent.be/publication/8523610



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