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

GlueX Collaboration

doi:10.1103/PhysRevC.95.042201

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

GlueX Collaboration

Research output: Contribution to journal › Article

33 Scopus citations

Abstract

We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→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.

Original language	English (US)
Article number	042201
Journal	Physical Review C
Volume	95
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.95.042201
State	Published - Apr 24 2017

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.95.042201

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GlueX Collaboration (2017). Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. Physical Review C, 95(4), [042201]. https://doi.org/10.1103/PhysRevC.95.042201

@article{7d89858b6bdf4c72b3354fc5053fd465,

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

abstract = "We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→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.",

author = "{GlueX Collaboration} and {Al Ghoul}, H. and Anassontzis, {E. G.} and A. Austregesilo and F. Barbosa and A. Barnes and Beattie, {T. D.} and Bennett, {D. W.} and Berdnikov, {V. V.} and T. Black and W. Boeglin and Briscoe, {W. J.} and Brooks, {W. K.} and Cannon, {B. E.} and O. Chernyshov and E. Chudakov and V. Crede and Dalton, {M. M.} and A. Deur and S. Dobbs and A. Dolgolenko and Michael Dugger and R. Dzhygadlo and H. Egiyan and P. Eugenio and C. Fanelli and Foda, {A. M.} and J. Frye and S. Furletov and L. Gan and A. Gasparian and A. Gerasimov and N. Gevorgyan and K. Goetzen and Goryachev, {V. S.} and L. Guo and H. Hakobyan and J. Hardin and A. Henderson and Huber, {G. M.} and Ireland, {D. G.} and Ito, {M. M.} and Jarvis, {N. S.} and Jones, {R. T.} and V. Kakoyan and M. Kamel and Klein, {F. J.} and R. Kliemt and C. Kourkoumeli and S. Kuleshov and Barry Ritchie",

year = "2017",

month = apr,

day = "24",

doi = "10.1103/PhysRevC.95.042201",

language = "English (US)",

volume = "95",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "4",

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TY - JOUR

T1 - Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV

AU - GlueX Collaboration

AU - Al Ghoul, H.

AU - Anassontzis, E. G.

AU - Austregesilo, A.

AU - Barbosa, F.

AU - Barnes, A.

AU - Beattie, T. D.

AU - Bennett, D. W.

AU - Berdnikov, V. V.

AU - Black, T.

AU - Boeglin, W.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Cannon, B. E.

AU - Chernyshov, O.

AU - Chudakov, E.

AU - Crede, V.

AU - Dalton, M. M.

AU - Deur, A.

AU - Dobbs, S.

AU - Dolgolenko, A.

AU - Dugger, Michael

AU - Dzhygadlo, R.

AU - Egiyan, H.

AU - Eugenio, P.

AU - Fanelli, C.

AU - Foda, A. M.

AU - Frye, J.

AU - Furletov, S.

AU - Gan, L.

AU - Gasparian, A.

AU - Gerasimov, A.

AU - Gevorgyan, N.

AU - Goetzen, K.

AU - Goryachev, V. S.

AU - Guo, L.

AU - Hakobyan, H.

AU - Hardin, J.

AU - Henderson, A.

AU - Huber, G. M.

AU - Ireland, D. G.

AU - Ito, M. M.

AU - Jarvis, N. S.

AU - Jones, R. T.

AU - Kakoyan, V.

AU - Kamel, M.

AU - Klein, F. J.

AU - Kliemt, R.

AU - Kourkoumeli, C.

AU - Kuleshov, S.

AU - Ritchie, Barry

PY - 2017/4/24

Y1 - 2017/4/24

N2 - We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→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.

AB - We report measurements of the photon beam asymmetry Σ for the reactions γ - p→pπ0 and γ - p→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.

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U2 - 10.1103/PhysRevC.95.042201

DO - 10.1103/PhysRevC.95.042201

M3 - Article

AN - SCOPUS:85018550688

VL - 95

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 4

M1 - 042201

ER -