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; T. D. Beattie; D. W. Bennett; V. V. Berdnikov; T. Black; W. Boeglin; W. J. Briscoe; B. E. Cannon; O. Chernyshov; E. Chudakov; V. Crede; M. M. Dalton; A. Deur; S. Dobbs; A. Dolgolenko; M. 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; V. Kakoyan; M. Kamel; F. J. Klein; R. Kliemt; C. Kourkoumeli; S. Kuleshov; I. Kuznetsov; M. Lara; I. Larin; D. Lawrence; W. I. Levine; K. Livingston; G. J. Lolos; V. Lyubovitskij; D. Mack; P. T. Mattione; V. Matveev; M. McCaughan; M. McCracken; W. McGinley; J. McIntyre; R. Mendez; C. A. Meyer; R. Miskimen; F. Mokaya; K. Moriya; F. Nerling; G. Nigmatkulov; N. Ochoa; A. I. Ostrovidov; Z. Papandreou; M. Patsyuk; R. Pedroni; M. R. Pennington; L. Pentchev; K. J. Peters; E. Pooser; B. Pratt; Y. Qiang; J. Reinhold; B. G. Ritchie; L. Robison; D. Romanov; C. Salgado; R. A. Schumacher; C. Schwarz; J. Schwiening; A. Yu Semenov; I. A. Semenova; K. K. Seth; M. R. Shepherd; D. I. Sober; A. Somov; S. Somov; O. Soto; N. Sparks; M. J. Staib; J. R. Stevens; I. I. Strakovsky; A. Subedi; V. Tarasov; A. Teymurazyan; I. Tolstukhin; A. Tomaradze; A. Toro; A. Tsaris; G. Vasileiadis; I. Vega; N. K. Walford; T. Whitlatch; E. Wolin; T. Xiao; J. Zarling; B. Zihlmann; V. Mathieu; J. Nys; Dominik Werthmüller

doi:10.1103/PhysRevC.95.042201

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, T. D. Beattie, D. W. Bennett, V. V. Berdnikov, T. Black, W. Boeglin, W. J. Briscoe, B. E. Cannon, O. Chernyshov, E. Chudakov, V. Crede, M. M. Dalton, A. Deur, S. Dobbs, A. Dolgolenko, M. Dugger, R. DzhygadloH. 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, V. Kakoyan, M. Kamel, F. J. Klein, R. Kliemt, C. Kourkoumeli, S. Kuleshov, I. Kuznetsov, M. Lara, I. Larin, D. Lawrence, W. I. Levine, K. Livingston, G. J. Lolos, V. Lyubovitskij, D. Mack, P. T. Mattione, V. Matveev, M. McCaughan, M. McCracken, W. McGinley, J. McIntyre, R. Mendez, C. A. Meyer, R. Miskimen, F. Mokaya, K. Moriya, F. Nerling, G. Nigmatkulov, N. Ochoa, A. I. Ostrovidov, Z. Papandreou, M. Patsyuk, R. Pedroni, M. R. Pennington, L. Pentchev, K. J. Peters, E. Pooser, B. Pratt, Y. Qiang, J. Reinhold, B. G. Ritchie, L. Robison, D. Romanov, C. Salgado, R. A. Schumacher, C. Schwarz, J. Schwiening, A. Yu Semenov, I. A. Semenova, K. K. Seth, M. R. Shepherd, D. I. Sober, A. Somov, S. Somov, O. Soto, N. Sparks, M. J. Staib, J. R. Stevens^*, I. I. Strakovsky, A. Subedi, V. Tarasov, A. Teymurazyan, I. Tolstukhin, A. Tomaradze, A. Toro, A. Tsaris, G. Vasileiadis, I. Vega, N. K. Walford, T. Whitlatch, E. Wolin, T. Xiao, J. Zarling, B. Zihlmann, V. Mathieu, J. Nys, Dominik Werthmüller

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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

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PhysRevC.95.042201
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Al Ghoul, H., Anassontzis, E. G., Austregesilo, A., Barbosa, F., Beattie, T. D., Bennett, D. W., Berdnikov, V. V., Black, T., Boeglin, W., Briscoe, W. J., Cannon, B. E., Chernyshov, O., Chudakov, E., Crede, V., Dalton, M. M., Deur, A., Dobbs, S., Dolgolenko, A., Dugger, M., ... Werthmüller, D. (2017). Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ=9 GeV. Physical Review C, 95(4), Article 042201. https://doi.org/10.1103/PhysRevC.95.042201

@article{5238d39a1577428ababc2930cbfb3986,

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 Beattie, {T. D.} and Bennett, {D. W.} and Berdnikov, {V. V.} and T. Black and W. Boeglin and Briscoe, {W. J.} 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 V. Kakoyan and M. Kamel and Klein, {F. J.} and R. Kliemt and C. Kourkoumeli and S. Kuleshov and I. Kuznetsov and M. Lara and I. Larin and D. Lawrence and Levine, {W. I.} and K. Livingston and Lolos, {G. J.} and V. Lyubovitskij and D. Mack and Mattione, {P. T.} and V. Matveev and M. McCaughan and M. McCracken and W. McGinley and J. McIntyre and R. Mendez and Meyer, {C. A.} and R. Miskimen and F. Mokaya and K. Moriya and F. Nerling and G. Nigmatkulov and N. Ochoa and Ostrovidov, {A. I.} and Z. Papandreou and M. Patsyuk and R. Pedroni and Pennington, {M. R.} and L. Pentchev and Peters, {K. J.} and E. Pooser and B. Pratt and Y. Qiang and J. Reinhold and Ritchie, {B. G.} and L. Robison and D. Romanov and C. Salgado and Schumacher, {R. A.} and C. Schwarz and J. Schwiening and Semenov, {A. Yu} and Semenova, {I. A.} and Seth, {K. K.} and Shepherd, {M. R.} and Sober, {D. I.} and A. Somov and S. Somov and O. Soto and N. Sparks and Staib, {M. J.} and Stevens, {J. R.} and Strakovsky, {I. I.} and A. Subedi and V. Tarasov and A. Teymurazyan and I. Tolstukhin and A. Tomaradze and A. Toro and A. Tsaris and G. Vasileiadis and I. Vega and Walford, {N. K.} and T. Whitlatch and E. Wolin and T. Xiao and J. Zarling and B. Zihlmann and V. Mathieu and J. Nys and Dominik Werthm{\"u}ller",

note = "{\textcopyright}2017 American Physical Society",

year = "2017",

month = apr,

day = "24",

doi = "10.1103/PhysRevC.95.042201",

language = "English",

volume = "95",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "4",

}

Al Ghoul, H, Anassontzis, EG, Austregesilo, A, Barbosa, F, Beattie, TD, Bennett, DW, Berdnikov, VV, Black, T, Boeglin, W, Briscoe, WJ, 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, Kakoyan, V, Kamel, M, Klein, FJ, Kliemt, R, Kourkoumeli, C, Kuleshov, S, Kuznetsov, I, Lara, M, Larin, I, Lawrence, D, Levine, WI, Livingston, K, Lolos, GJ, Lyubovitskij, V, Mack, D, Mattione, PT, Matveev, V, McCaughan, M, McCracken, M, McGinley, W, McIntyre, J, Mendez, R, Meyer, CA, Miskimen, R, Mokaya, F, Moriya, K, Nerling, F, Nigmatkulov, G, Ochoa, N, Ostrovidov, AI, Papandreou, Z, Patsyuk, M, Pedroni, R, Pennington, MR, Pentchev, L, Peters, KJ, Pooser, E, Pratt, B, Qiang, Y, Reinhold, J, Ritchie, BG, Robison, L, Romanov, D, Salgado, C, Schumacher, RA, Schwarz, C, Schwiening, J, Semenov, AY, Semenova, IA, Seth, KK, Shepherd, MR, Sober, DI, Somov, A, Somov, S, Soto, O, Sparks, N, Staib, MJ, Stevens, JR, Strakovsky, II, Subedi, A, Tarasov, V, Teymurazyan, A, Tolstukhin, I, Tomaradze, A, Toro, A, Tsaris, A, Vasileiadis, G, Vega, I, Walford, NK, Whitlatch, T, Wolin, E, Xiao, T, Zarling, J, Zihlmann, B, Mathieu, V, Nys, J & Werthmüller, D 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

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 - Beattie, T. D.

AU - Bennett, D. W.

AU - Berdnikov, V. V.

AU - Black, T.

AU - Boeglin, W.

AU - Briscoe, W. J.

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 - Kakoyan, V.

AU - Kamel, M.

AU - Klein, F. J.

AU - Kliemt, R.

AU - Kourkoumeli, C.

AU - Kuleshov, S.

AU - Kuznetsov, I.

AU - Lara, M.

AU - Larin, I.

AU - Lawrence, D.

AU - Levine, W. I.

AU - Livingston, K.

AU - Lolos, G. J.

AU - Lyubovitskij, V.

AU - Mack, D.

AU - Mattione, P. T.

AU - Matveev, V.

AU - McCaughan, M.

AU - McCracken, M.

AU - McGinley, W.

AU - McIntyre, J.

AU - Mendez, R.

AU - Meyer, C. A.

AU - Miskimen, R.

AU - Mokaya, F.

AU - Moriya, K.

AU - Nerling, F.

AU - Nigmatkulov, G.

AU - Ochoa, N.

AU - Ostrovidov, A. I.

AU - Papandreou, Z.

AU - Patsyuk, M.

AU - Pedroni, R.

AU - Pennington, M. R.

AU - Pentchev, L.

AU - Peters, K. J.

AU - Pooser, E.

AU - Pratt, B.

AU - Qiang, Y.

AU - Reinhold, J.

AU - Ritchie, B. G.

AU - Robison, L.

AU - Romanov, D.

AU - Salgado, C.

AU - Schumacher, R. A.

AU - Schwarz, C.

AU - Schwiening, J.

AU - Semenov, A. Yu

AU - Semenova, I. A.

AU - Seth, K. K.

AU - Shepherd, M. R.

AU - Sober, D. I.

AU - Somov, A.

AU - Somov, S.

AU - Soto, O.

AU - Sparks, N.

AU - Staib, M. J.

AU - Stevens, J. R.

AU - Strakovsky, I. I.

AU - Subedi, A.

AU - Tarasov, V.

AU - Teymurazyan, A.

AU - Tolstukhin, I.

AU - Tomaradze, A.

AU - Toro, A.

AU - Tsaris, A.

AU - Vasileiadis, G.

AU - Vega, I.

AU - Walford, N. K.

AU - Whitlatch, T.

AU - Wolin, E.

AU - Xiao, T.

AU - Zarling, J.

AU - Zihlmann, B.

AU - Mathieu, V.

AU - Nys, J.

AU - Werthmüller, Dominik

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.

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

U2 - 10.1103/PhysRevC.95.042201

DO - 10.1103/PhysRevC.95.042201

M3 - Article

AN - SCOPUS:85018550688

SN - 2469-9985

VL - 95

JO - Physical Review C

JF - Physical Review C

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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