Photon beam asymmetry Σ for η and η photoproduction from the proton

P. Collins, Barry Ritchie, Michael Dugger, A. V. Anisovich, M. Döring, E. Klempt, V. A. Nikonov, D. Rönchen, D. Sadasivan, A. Sarantsev, K. P. Adhikari, Z. Akbar, M. J. Amaryan, S. Anefalos Pereira, H. Avakian, J. Ball, I. Balossino, M. Bashkanov, M. Battaglieri, I. BedlinskiyA. S. Biselli, W. J. Briscoe, W. K. Brooks, V. D. Burkert, Frank Thanh Cao, D. S. Carman, A. Celentano, S. Chandavar, G. Charles, T. Chetry, G. Ciullo, L. Clark, L. Colaneri, P. L. Cole, N. Compton, M. Contalbrigo, O. Cortes, V. Crede, A. D'Angelo, N. Dashyan, R. De Vita, E. De Sanctis, A. Deur, C. Djalali, R. Dupre, H. Egiyan, A. El Alaoui, L. El Fassi, L. Elouadrhiri, P. Eugenio, E. Fanchini, G. Fedotov, A. Filippi, J. A. Fleming, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, D. I. Glazier, C. Gleason, E. Golovatch, R. W. Gothe, K. A. Griffioen, L. Guo, K. Hafidi, H. Hakobyan, C. Hanretty, N. Harrison, D. Heddle, K. Hicks, M. Holtrop, S. M. Hughes, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, D. Jenkins, H. S. Jo, S. Joosten, D. Keller, G. Khachatryan, M. Khachatryan, M. Khandaker, A. Kim, W. Kim, A. Klein, F. J. Klein, V. Kubarovsky, L. Lanza, P. Lenisa, K. Livingston, I. J.D. MacGregor, N. Markov, B. McKinnon, C. A. Meyer, M. Mirazita, V. Mokeev, R. A. Montgomery, A. Movsisyan, C. Munoz Camacho, G. Murdoch, P. Nadel-Turonski, S. Niccolai, G. Niculescu, I. Niculescu, M. Osipenko, A. I. Ostrovidov, M. Paolone, R. Paremuzyan, K. Park, E. Pasyuk, W. Phelps, S. Pisano, O. Pogorelko, J. W. Price, Y. Prok, D. Protopopescu, B. A. Raue, M. Ripani, A. Rizzo, G. Rosner, P. Roy, F. Sabatié, C. Salgado, R. A. Schumacher, Y. G. Sharabian, Iu Skorodumina, G. D. Smith, D. Sokhan, N. Sparveris, S. Stepanyan, I. I. Strakovsky, S. Strauch, M. Taiuti, Ye Tian, B. Torayev, M. Ungaro, H. Voskanyan, E. Voutier, N. K. Walford, X. Wei, N. Zachariou, J. Zhang

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Measurements of the linearly-polarized photon beam asymmetry Σ for photoproduction from the proton of η and η mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target within the CEBAF Large Acceptance Spectrometer. Results are presented for the γp→ηp reaction for incident photon energies from 1.070 to 1.876 GeV, and from 1.516 to 1.836 GeV for the γp→ηp reaction. For γp→ηp, the data reported here considerably extend the range of measurements to higher energies, and are consistent with the few previously published measurements for this observable near threshold. For γp→ηp, the results obtained are consistent with the few previously published measurements for this observable near threshold, but also greatly expand the incident photon energy coverage for that reaction. Initial analysis of the data reported here with the Bonn–Gatchina model strengthens the evidence for four nucleon resonances – the N(1895)1/2, N(1900)3/2+, N(2100)1/2+ and N(2120)3/2 resonances – which presently lack the “four-star” status in the current Particle Data Group compilation, providing examples of how these new measurements help refine models of the photoproduction process.

Original languageEnglish (US)
Pages (from-to)213-221
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume771
DOIs
StatePublished - Aug 10 2017

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photon beams
photoproduction
asymmetry
protons
thresholds
photons
acceptability
bremsstrahlung
cryogenics
energy
mesons
spectrometers
stars
hydrogen

Keywords

  • Eta photoproduction
  • Eta-prime photoproduction
  • Meson photoproduction
  • Photon beam asymmetry
  • Polarization observable

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Photon beam asymmetry Σ for η and η photoproduction from the proton. / Collins, P.; Ritchie, Barry; Dugger, Michael; Anisovich, A. V.; Döring, M.; Klempt, E.; Nikonov, V. A.; Rönchen, D.; Sadasivan, D.; Sarantsev, A.; Adhikari, K. P.; Akbar, Z.; Amaryan, M. J.; Anefalos Pereira, S.; Avakian, H.; Ball, J.; Balossino, I.; Bashkanov, M.; Battaglieri, M.; Bedlinskiy, I.; Biselli, A. S.; Briscoe, W. J.; Brooks, W. K.; Burkert, V. D.; Cao, Frank Thanh; Carman, D. S.; Celentano, A.; Chandavar, S.; Charles, G.; Chetry, T.; Ciullo, G.; Clark, L.; Colaneri, L.; Cole, P. L.; Compton, N.; Contalbrigo, M.; Cortes, O.; Crede, V.; D'Angelo, A.; Dashyan, N.; De Vita, R.; De Sanctis, E.; Deur, A.; Djalali, C.; Dupre, R.; Egiyan, H.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Eugenio, P.; Fanchini, E.; Fedotov, G.; Filippi, A.; Fleming, J. A.; Ghandilyan, Y.; Gilfoyle, G. P.; Giovanetti, K. L.; Girod, F. X.; Glazier, D. I.; Gleason, C.; Golovatch, E.; Gothe, R. W.; Griffioen, K. A.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hanretty, C.; Harrison, N.; Heddle, D.; Hicks, K.; Holtrop, M.; Hughes, S. M.; Ilieva, Y.; Ireland, D. G.; Ishkhanov, B. S.; Isupov, E. L.; Jenkins, D.; Jo, H. S.; Joosten, S.; Keller, D.; Khachatryan, G.; Khachatryan, M.; Khandaker, M.; Kim, A.; Kim, W.; Klein, A.; Klein, F. J.; Kubarovsky, V.; Lanza, L.; Lenisa, P.; Livingston, K.; MacGregor, I. J.D.; Markov, N.; McKinnon, B.; Meyer, C. A.; Mirazita, M.; Mokeev, V.; Montgomery, R. A.; Movsisyan, A.; Munoz Camacho, C.; Murdoch, G.; Nadel-Turonski, P.; Niccolai, S.; Niculescu, G.; Niculescu, I.; Osipenko, M.; Ostrovidov, A. I.; Paolone, M.; Paremuzyan, R.; Park, K.; Pasyuk, E.; Phelps, W.; Pisano, S.; Pogorelko, O.; Price, J. W.; Prok, Y.; Protopopescu, D.; Raue, B. A.; Ripani, M.; Rizzo, A.; Rosner, G.; Roy, P.; Sabatié, F.; Salgado, C.; Schumacher, R. A.; Sharabian, Y. G.; Skorodumina, Iu; Smith, G. D.; Sokhan, D.; Sparveris, N.; Stepanyan, S.; Strakovsky, I. I.; Strauch, S.; Taiuti, M.; Tian, Ye; Torayev, B.; Ungaro, M.; Voskanyan, H.; Voutier, E.; Walford, N. K.; Wei, X.; Zachariou, N.; Zhang, J.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 771, 10.08.2017, p. 213-221.

Research output: Contribution to journalArticle

Collins, P, Ritchie, B, Dugger, M, Anisovich, AV, Döring, M, Klempt, E, Nikonov, VA, Rönchen, D, Sadasivan, D, Sarantsev, A, Adhikari, KP, Akbar, Z, Amaryan, MJ, Anefalos Pereira, S, Avakian, H, Ball, J, Balossino, I, Bashkanov, M, Battaglieri, M, Bedlinskiy, I, Biselli, AS, Briscoe, WJ, Brooks, WK, Burkert, VD, Cao, FT, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Chetry, T, Ciullo, G, Clark, L, Colaneri, L, Cole, PL, Compton, N, Contalbrigo, M, Cortes, O, Crede, V, D'Angelo, A, Dashyan, N, De Vita, R, De Sanctis, E, Deur, A, Djalali, C, Dupre, R, Egiyan, H, El Alaoui, A, El Fassi, L, Elouadrhiri, L, Eugenio, P, Fanchini, E, Fedotov, G, Filippi, A, Fleming, JA, Ghandilyan, Y, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Glazier, DI, Gleason, C, Golovatch, E, Gothe, RW, Griffioen, KA, Guo, L, Hafidi, K, Hakobyan, H, Hanretty, C, Harrison, N, Heddle, D, Hicks, K, Holtrop, M, Hughes, SM, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Isupov, EL, Jenkins, D, Jo, HS, Joosten, S, Keller, D, Khachatryan, G, Khachatryan, M, Khandaker, M, Kim, A, Kim, W, Klein, A, Klein, FJ, Kubarovsky, V, Lanza, L, Lenisa, P, Livingston, K, MacGregor, IJD, Markov, N, McKinnon, B, Meyer, CA, Mirazita, M, Mokeev, V, Montgomery, RA, Movsisyan, A, Munoz Camacho, C, Murdoch, G, Nadel-Turonski, P, Niccolai, S, Niculescu, G, Niculescu, I, Osipenko, M, Ostrovidov, AI, Paolone, M, Paremuzyan, R, Park, K, Pasyuk, E, Phelps, W, Pisano, S, Pogorelko, O, Price, JW, Prok, Y, Protopopescu, D, Raue, BA, Ripani, M, Rizzo, A, Rosner, G, Roy, P, Sabatié, F, Salgado, C, Schumacher, RA, Sharabian, YG, Skorodumina, I, Smith, GD, Sokhan, D, Sparveris, N, Stepanyan, S, Strakovsky, II, Strauch, S, Taiuti, M, Tian, Y, Torayev, B, Ungaro, M, Voskanyan, H, Voutier, E, Walford, NK, Wei, X, Zachariou, N & Zhang, J 2017, 'Photon beam asymmetry Σ for η and η photoproduction from the proton', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 771, pp. 213-221. https://doi.org/10.1016/j.physletb.2017.05.045
Collins, P. ; Ritchie, Barry ; Dugger, Michael ; Anisovich, A. V. ; Döring, M. ; Klempt, E. ; Nikonov, V. A. ; Rönchen, D. ; Sadasivan, D. ; Sarantsev, A. ; Adhikari, K. P. ; Akbar, Z. ; Amaryan, M. J. ; Anefalos Pereira, S. ; Avakian, H. ; Ball, J. ; Balossino, I. ; Bashkanov, M. ; Battaglieri, M. ; Bedlinskiy, I. ; Biselli, A. S. ; Briscoe, W. J. ; Brooks, W. K. ; Burkert, V. D. ; Cao, Frank Thanh ; Carman, D. S. ; Celentano, A. ; Chandavar, S. ; Charles, G. ; Chetry, T. ; Ciullo, G. ; Clark, L. ; Colaneri, L. ; Cole, P. L. ; Compton, N. ; Contalbrigo, M. ; Cortes, O. ; Crede, V. ; D'Angelo, A. ; Dashyan, N. ; De Vita, R. ; De Sanctis, E. ; Deur, A. ; Djalali, C. ; Dupre, R. ; Egiyan, H. ; El Alaoui, A. ; El Fassi, L. ; Elouadrhiri, L. ; Eugenio, P. ; Fanchini, E. ; Fedotov, G. ; Filippi, A. ; Fleming, J. A. ; Ghandilyan, Y. ; Gilfoyle, G. P. ; Giovanetti, K. L. ; Girod, F. X. ; Glazier, D. I. ; Gleason, C. ; Golovatch, E. ; Gothe, R. W. ; Griffioen, K. A. ; Guo, L. ; Hafidi, K. ; Hakobyan, H. ; Hanretty, C. ; Harrison, N. ; Heddle, D. ; Hicks, K. ; Holtrop, M. ; Hughes, S. M. ; Ilieva, Y. ; Ireland, D. G. ; Ishkhanov, B. S. ; Isupov, E. L. ; Jenkins, D. ; Jo, H. S. ; Joosten, S. ; Keller, D. ; Khachatryan, G. ; Khachatryan, M. ; Khandaker, M. ; Kim, A. ; Kim, W. ; Klein, A. ; Klein, F. J. ; Kubarovsky, V. ; Lanza, L. ; Lenisa, P. ; Livingston, K. ; MacGregor, I. J.D. ; Markov, N. ; McKinnon, B. ; Meyer, C. A. ; Mirazita, M. ; Mokeev, V. ; Montgomery, R. A. ; Movsisyan, A. ; Munoz Camacho, C. ; Murdoch, G. ; Nadel-Turonski, P. ; Niccolai, S. ; Niculescu, G. ; Niculescu, I. ; Osipenko, M. ; Ostrovidov, A. I. ; Paolone, M. ; Paremuzyan, R. ; Park, K. ; Pasyuk, E. ; Phelps, W. ; Pisano, S. ; Pogorelko, O. ; Price, J. W. ; Prok, Y. ; Protopopescu, D. ; Raue, B. A. ; Ripani, M. ; Rizzo, A. ; Rosner, G. ; Roy, P. ; Sabatié, F. ; Salgado, C. ; Schumacher, R. A. ; Sharabian, Y. G. ; Skorodumina, Iu ; Smith, G. D. ; Sokhan, D. ; Sparveris, N. ; Stepanyan, S. ; Strakovsky, I. I. ; Strauch, S. ; Taiuti, M. ; Tian, Ye ; Torayev, B. ; Ungaro, M. ; Voskanyan, H. ; Voutier, E. ; Walford, N. K. ; Wei, X. ; Zachariou, N. ; Zhang, J. / Photon beam asymmetry Σ for η and η photoproduction from the proton. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2017 ; Vol. 771. pp. 213-221.
@article{09018bffcf5a4616ae41b36ecb25ecc2,
title = "Photon beam asymmetry Σ for η and η′ photoproduction from the proton",
abstract = "Measurements of the linearly-polarized photon beam asymmetry Σ for photoproduction from the proton of η and η′ mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target within the CEBAF Large Acceptance Spectrometer. Results are presented for the γp→ηp reaction for incident photon energies from 1.070 to 1.876 GeV, and from 1.516 to 1.836 GeV for the γp→η′p reaction. For γp→ηp, the data reported here considerably extend the range of measurements to higher energies, and are consistent with the few previously published measurements for this observable near threshold. For γp→η′p, the results obtained are consistent with the few previously published measurements for this observable near threshold, but also greatly expand the incident photon energy coverage for that reaction. Initial analysis of the data reported here with the Bonn–Gatchina model strengthens the evidence for four nucleon resonances – the N(1895)1/2−, N(1900)3/2+, N(2100)1/2+ and N(2120)3/2− resonances – which presently lack the “four-star” status in the current Particle Data Group compilation, providing examples of how these new measurements help refine models of the photoproduction process.",
keywords = "Eta photoproduction, Eta-prime photoproduction, Meson photoproduction, Photon beam asymmetry, Polarization observable",
author = "P. Collins and Barry Ritchie and Michael Dugger and Anisovich, {A. V.} and M. D{\"o}ring and E. Klempt and Nikonov, {V. A.} and D. R{\"o}nchen and D. Sadasivan and A. Sarantsev and Adhikari, {K. P.} and Z. Akbar and Amaryan, {M. J.} and {Anefalos Pereira}, S. and H. Avakian and J. Ball and I. Balossino and M. Bashkanov and M. Battaglieri and I. Bedlinskiy and Biselli, {A. S.} and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Cao, {Frank Thanh} and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and T. Chetry and G. Ciullo and L. Clark and L. Colaneri and Cole, {P. L.} and N. Compton and M. Contalbrigo and O. Cortes and V. Crede and A. D'Angelo and N. Dashyan and {De Vita}, R. and {De Sanctis}, E. and A. Deur and C. Djalali and R. Dupre and H. Egiyan and {El Alaoui}, A. and {El Fassi}, L. and L. Elouadrhiri and P. Eugenio and E. Fanchini and G. Fedotov and A. Filippi and Fleming, {J. A.} and Y. Ghandilyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Glazier, {D. I.} and C. Gleason and E. Golovatch and Gothe, {R. W.} and Griffioen, {K. A.} and L. Guo and K. Hafidi and H. Hakobyan and C. Hanretty and N. Harrison and D. Heddle and K. Hicks and M. Holtrop and Hughes, {S. M.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and Isupov, {E. L.} and D. Jenkins and Jo, {H. S.} and S. Joosten and D. Keller and G. Khachatryan and M. Khachatryan and M. Khandaker and A. Kim and W. Kim and A. Klein and Klein, {F. J.} and V. Kubarovsky and L. Lanza and P. Lenisa and K. Livingston and MacGregor, {I. J.D.} and N. Markov and B. McKinnon and Meyer, {C. A.} and M. Mirazita and V. Mokeev and Montgomery, {R. A.} and A. Movsisyan and {Munoz Camacho}, C. and G. Murdoch and P. Nadel-Turonski and S. Niccolai and G. Niculescu and I. Niculescu and M. Osipenko and Ostrovidov, {A. I.} and M. Paolone and R. Paremuzyan and K. Park and E. Pasyuk and W. Phelps and S. Pisano and O. Pogorelko and Price, {J. W.} and Y. Prok and D. Protopopescu and Raue, {B. A.} and M. Ripani and A. Rizzo and G. Rosner and P. Roy and F. Sabati{\'e} and C. Salgado and Schumacher, {R. A.} and Sharabian, {Y. G.} and Iu Skorodumina and Smith, {G. D.} and D. Sokhan and N. Sparveris and S. Stepanyan and Strakovsky, {I. I.} and S. Strauch and M. Taiuti and Ye Tian and B. Torayev and M. Ungaro and H. Voskanyan and E. Voutier and Walford, {N. K.} and X. Wei and N. Zachariou and J. Zhang",
year = "2017",
month = "8",
day = "10",
doi = "10.1016/j.physletb.2017.05.045",
language = "English (US)",
volume = "771",
pages = "213--221",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
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}

TY - JOUR

T1 - Photon beam asymmetry Σ for η and η′ photoproduction from the proton

AU - Collins, P.

AU - Ritchie, Barry

AU - Dugger, Michael

AU - Anisovich, A. V.

AU - Döring, M.

AU - Klempt, E.

AU - Nikonov, V. A.

AU - Rönchen, D.

AU - Sadasivan, D.

AU - Sarantsev, A.

AU - Adhikari, K. P.

AU - Akbar, Z.

AU - Amaryan, M. J.

AU - Anefalos Pereira, S.

AU - Avakian, H.

AU - Ball, J.

AU - Balossino, I.

AU - Bashkanov, M.

AU - Battaglieri, M.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Cao, Frank Thanh

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Chetry, T.

AU - Ciullo, G.

AU - Clark, L.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Compton, N.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Crede, V.

AU - D'Angelo, A.

AU - Dashyan, N.

AU - De Vita, R.

AU - De Sanctis, E.

AU - Deur, A.

AU - Djalali, C.

AU - Dupre, R.

AU - Egiyan, H.

AU - El Alaoui, A.

AU - El Fassi, L.

AU - Elouadrhiri, L.

AU - Eugenio, P.

AU - Fanchini, E.

AU - Fedotov, G.

AU - Filippi, A.

AU - Fleming, J. A.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Glazier, D. I.

AU - Gleason, C.

AU - Golovatch, E.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guo, L.

AU - Hafidi, K.

AU - Hakobyan, H.

AU - Hanretty, C.

AU - Harrison, N.

AU - Heddle, D.

AU - Hicks, K.

AU - Holtrop, M.

AU - Hughes, S. M.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Isupov, E. L.

AU - Jenkins, D.

AU - Jo, H. S.

AU - Joosten, S.

AU - Keller, D.

AU - Khachatryan, G.

AU - Khachatryan, M.

AU - Khandaker, M.

AU - Kim, A.

AU - Kim, W.

AU - Klein, A.

AU - Klein, F. J.

AU - Kubarovsky, V.

AU - Lanza, L.

AU - Lenisa, P.

AU - Livingston, K.

AU - MacGregor, I. J.D.

AU - Markov, N.

AU - McKinnon, B.

AU - Meyer, C. A.

AU - Mirazita, M.

AU - Mokeev, V.

AU - Montgomery, R. A.

AU - Movsisyan, A.

AU - Munoz Camacho, C.

AU - Murdoch, G.

AU - Nadel-Turonski, P.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Osipenko, M.

AU - Ostrovidov, A. I.

AU - Paolone, M.

AU - Paremuzyan, R.

AU - Park, K.

AU - Pasyuk, E.

AU - Phelps, W.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Price, J. W.

AU - Prok, Y.

AU - Protopopescu, D.

AU - Raue, B. A.

AU - Ripani, M.

AU - Rizzo, A.

AU - Rosner, G.

AU - Roy, P.

AU - Sabatié, F.

AU - Salgado, C.

AU - Schumacher, R. A.

AU - Sharabian, Y. G.

AU - Skorodumina, Iu

AU - Smith, G. D.

AU - Sokhan, D.

AU - Sparveris, N.

AU - Stepanyan, S.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Taiuti, M.

AU - Tian, Ye

AU - Torayev, B.

AU - Ungaro, M.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Walford, N. K.

AU - Wei, X.

AU - Zachariou, N.

AU - Zhang, J.

PY - 2017/8/10

Y1 - 2017/8/10

N2 - Measurements of the linearly-polarized photon beam asymmetry Σ for photoproduction from the proton of η and η′ mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target within the CEBAF Large Acceptance Spectrometer. Results are presented for the γp→ηp reaction for incident photon energies from 1.070 to 1.876 GeV, and from 1.516 to 1.836 GeV for the γp→η′p reaction. For γp→ηp, the data reported here considerably extend the range of measurements to higher energies, and are consistent with the few previously published measurements for this observable near threshold. For γp→η′p, the results obtained are consistent with the few previously published measurements for this observable near threshold, but also greatly expand the incident photon energy coverage for that reaction. Initial analysis of the data reported here with the Bonn–Gatchina model strengthens the evidence for four nucleon resonances – the N(1895)1/2−, N(1900)3/2+, N(2100)1/2+ and N(2120)3/2− resonances – which presently lack the “four-star” status in the current Particle Data Group compilation, providing examples of how these new measurements help refine models of the photoproduction process.

AB - Measurements of the linearly-polarized photon beam asymmetry Σ for photoproduction from the proton of η and η′ mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target within the CEBAF Large Acceptance Spectrometer. Results are presented for the γp→ηp reaction for incident photon energies from 1.070 to 1.876 GeV, and from 1.516 to 1.836 GeV for the γp→η′p reaction. For γp→ηp, the data reported here considerably extend the range of measurements to higher energies, and are consistent with the few previously published measurements for this observable near threshold. For γp→η′p, the results obtained are consistent with the few previously published measurements for this observable near threshold, but also greatly expand the incident photon energy coverage for that reaction. Initial analysis of the data reported here with the Bonn–Gatchina model strengthens the evidence for four nucleon resonances – the N(1895)1/2−, N(1900)3/2+, N(2100)1/2+ and N(2120)3/2− resonances – which presently lack the “four-star” status in the current Particle Data Group compilation, providing examples of how these new measurements help refine models of the photoproduction process.

KW - Eta photoproduction

KW - Eta-prime photoproduction

KW - Meson photoproduction

KW - Photon beam asymmetry

KW - Polarization observable

UR - http://www.scopus.com/inward/record.url?scp=85027712019&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027712019&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2017.05.045

DO - 10.1016/j.physletb.2017.05.045

M3 - Article

AN - SCOPUS:85027712019

VL - 771

SP - 213

EP - 221

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

ER -