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, W. J. Briscoe, W. K. Brooks, B. E. Cannon, O. Chernyshov, E. Chudakov, V. Crede, M. M. Dalton, A. Deur, S. Dobbs, A. DolgolenkoM. Dugger, R. Dzhygadlo, H. Egiyan, P. Eugenio, C. Fanelli, A. M. Foda, J. Frye, S. Furletov, L. Gan, A. Gasparian, A. Gerasimov, N. Gevorgyan, K. Goetzen, V. S. Goryachev, L. Guo, H. Hakobyan, J. Hardin, A. Henderson, G. M. Huber, D. G. Ireland, M. M. Ito, N. S. Jarvis, R. T. Jones, V. Kakoyan, M. Kamel, F. J. Klein, R. Kliemt, C. Kourkoumeli, S. Kuleshov, V. Lyubovitskij, GlueX Collaboration

Research School of High-Energy Physics

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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
Article number	042201
Journal	Physical Review C
Volume	95
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.95.042201
Publication status	Published - 24 Apr 2017

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.95.042201

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Al Ghoul, H., Anassontzis, E. G., Austregesilo, A., Barbosa, F., Barnes, A., Beattie, T. D., Bennett, D. W., Berdnikov, V. V., Black, T., Boeglin, W., Briscoe, W. J., Brooks, W. K., Cannon, B. E., Chernyshov, O., Chudakov, E., Crede, V., Dalton, M. M., Deur, A., Dobbs, S., ... 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

Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. / Al Ghoul, H.; Anassontzis, E. G.; Austregesilo, A.; Barbosa, F.; Barnes, A.; Beattie, T. D.; Bennett, D. W.; Berdnikov, V. V.; Black, T.; Boeglin, W.; Briscoe, W. J.; Brooks, W. K.; Cannon, B. E.; Chernyshov, O.; Chudakov, E.; Crede, V.; Dalton, M. M.; Deur, A.; Dobbs, S.; Dolgolenko, A.; Dugger, M.; Dzhygadlo, R.; Egiyan, H.; Eugenio, P.; Fanelli, C.; Foda, A. M.; Frye, J.; Furletov, S.; Gan, L.; Gasparian, A.; Gerasimov, A.; Gevorgyan, N.; Goetzen, K.; Goryachev, V. S.; Guo, L.; Hakobyan, H.; Hardin, J.; Henderson, A.; Huber, G. M.; Ireland, D. G.; Ito, M. M.; Jarvis, N. S.; Jones, R. T.; Kakoyan, V.; Kamel, M.; Klein, F. J.; Kliemt, R.; Kourkoumeli, C.; Kuleshov, S.; Lyubovitskij, V.; GlueX Collaboration.

In: Physical Review C, Vol. 95, No. 4, 042201, 24.04.2017.

Research output: Contribution to journal › Article › peer-review

Al Ghoul, H, Anassontzis, EG, Austregesilo, A, Barbosa, F, Barnes, A, Beattie, TD, Bennett, DW, Berdnikov, VV, Black, T, Boeglin, W, Briscoe, WJ, Brooks, WK, Cannon, BE, Chernyshov, O, Chudakov, E, Crede, V, Dalton, MM, Deur, A, Dobbs, S, Dolgolenko, A, Dugger, M, Dzhygadlo, R, Egiyan, H, Eugenio, P, Fanelli, C, Foda, AM, Frye, J, Furletov, S, Gan, L, Gasparian, A, Gerasimov, A, Gevorgyan, N, Goetzen, K, Goryachev, VS, Guo, L, Hakobyan, H, Hardin, J, Henderson, A, Huber, GM, Ireland, DG, Ito, MM, Jarvis, NS, Jones, RT, Kakoyan, V, Kamel, M, Klein, FJ, Kliemt, R, Kourkoumeli, C, Kuleshov, S, Lyubovitskij, V & GlueX Collaboration 2017, 'Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV', Physical Review C, vol. 95, no. 4, 042201. https://doi.org/10.1103/PhysRevC.95.042201

Al Ghoul, H. ; Anassontzis, E. G. ; Austregesilo, A. ; Barbosa, F. ; Barnes, A. ; Beattie, T. D. ; Bennett, D. W. ; Berdnikov, V. V. ; Black, T. ; Boeglin, W. ; Briscoe, W. J. ; Brooks, W. K. ; Cannon, B. E. ; Chernyshov, O. ; Chudakov, E. ; Crede, V. ; Dalton, M. M. ; Deur, A. ; Dobbs, S. ; Dolgolenko, A. ; Dugger, M. ; Dzhygadlo, R. ; Egiyan, H. ; Eugenio, P. ; Fanelli, C. ; Foda, A. M. ; Frye, J. ; Furletov, S. ; Gan, L. ; Gasparian, A. ; Gerasimov, A. ; Gevorgyan, N. ; Goetzen, K. ; Goryachev, V. S. ; Guo, L. ; Hakobyan, H. ; Hardin, J. ; Henderson, A. ; Huber, G. M. ; Ireland, D. G. ; Ito, M. M. ; Jarvis, N. S. ; Jones, R. T. ; Kakoyan, V. ; Kamel, M. ; Klein, F. J. ; Kliemt, R. ; Kourkoumeli, C. ; Kuleshov, S. ; Lyubovitskij, V. ; GlueX Collaboration. / Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. In: Physical Review C. 2017 ; Vol. 95, No. 4.

@article{f24736518ff64b3aa94ed9cb992966c1,

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 = "{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 M. 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 V. Lyubovitskij and {GlueX Collaboration}",

note = "Funding Information: This work was supported in part by the U.S. Department of Energy, the U.S. National Science Foundation, the Natural Sciences and Engineering Research Council of Canada, the Russian Foundation for Basic Research, the UK Science and Technology Facilities Council, the Chilean Comision Nacional de Investigacion Cientifica y Tecnologica, the National Natural Science Foundation of China, the China Scholarship Council, and the Hubei Nuclear Solid Physics Key Laboratory. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contract No. DE-AC05-06OR23177.",

year = "2017",

month = apr,

day = "24",

doi = "10.1103/PhysRevC.95.042201",

language = "English",

volume = "95",

journal = "Physical Review C",

issn = "0556-2813",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

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

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, M.

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 - Lyubovitskij, V.

AU - GlueX Collaboration

N1 - Funding Information: This work was supported in part by the U.S. Department of Energy, the U.S. National Science Foundation, the Natural Sciences and Engineering Research Council of Canada, the Russian Foundation for Basic Research, the UK Science and Technology Facilities Council, the Chilean Comision Nacional de Investigacion Cientifica y Tecnologica, the National Natural Science Foundation of China, the China Scholarship Council, and the Hubei Nuclear Solid Physics Key Laboratory. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contract No. DE-AC05-06OR23177.

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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UR - http://www.scopus.com/inward/citedby.url?scp=85018550688&partnerID=8YFLogxK

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 - 0556-2813

IS - 4

M1 - 042201

ER -

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

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