First measurement of the helicity asymmetry E in η photoproduction on the proton

I. Senderovich; B. T. Morrison; M. Dugger; B. G. Ritchie; E. Pasyuk; R. Tucker; J. Brock; C. Carlin; C. D. Keith; D. G. Meekins; M. L. Seely; D. Rönchen; M. Döring; P. Collins; K. P. Adhikari; D. Adikaram; Z. Akbar; M. D. Anderson; S. Anefalos Pereira; R. A. Badui; J. Ball; N. A. Baltzell; M. Battaglieri; V. Batourine; I. Bedlinskiy; A. S. Biselli; S. Boiarinov; W. J. Briscoe; W. K. Brooks; V. D. Burkert; D. S. Carman; A. Celentano; S. Chandavar; G. Charles; L. Colaneri; P. L. Cole; M. Contalbrigo; O. Cortes; V. Credé; 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; G. Fedotov; S. Fegan; A. Filippi; J. A. Fleming; A. Fradi; B. Garillon; Y. Ghandilyan; G. P. Gilfoyle; K. L. Giovanetti; F. X. Girod; D. I. Glazier; J. T. Goetz; W. Gohn; E. Golovatch; R. W. Gothe; K. A. Griffioen; M. Guidal; L. Guo; K. Hafidi; H. Hakobyan; C. Hanretty; M. Hattawy; K. Hicks; D. Ho; M. Holtrop; S. M. Hughes; Y. Ilieva; D. G. Ireland; B. S. Ishkhanov; D. Jenkins; H. Jiang; H. S. Jo; K. Joo; S. Joosten; D. Keller; G. Khachatryan; M. Khandaker; A. Kim; F. J. Klein; V. Kubarovsky; M. C. Kunkel; P. Lenisa; K. Livingston; H. Y. Lu; I. J.D. MacGregor; P. Mattione; B. McKinnon; C. A. Meyer; T. Mineeva; V. Mokeev; R. A. Montgomery; A. Movsisyan; C. Munoz Camacho; P. Nadel-Turonski; L. A. Net; S. Niccolai; G. Niculescu; I. Niculescu; M. Osipenko; K. Park; S. Park; P. Peng; W. Phelps; S. Pisano; O. Pogorelko; J. W. Price; Y. Prok; A. J.R. Puckett; M. Ripani; A. Rizzo; G. Rosner; P. Roy; F. Sabatié; C. Salgado; D. Schott; R. A. Schumacher; E. Seder; A. Simonyan; Iu Skorodumina; G. D. Smith; D. I. Sober; N. Sparveris; S. Stepanyan; P. Stoler; I. I. Strakovsky; S. Strauch; V. Sytnik; Ye Tian; M. Ungaro; H. Voskanyan; E. Voutier; N. K. Walford; X. Wei; M. H. Wood; N. Zachariou; L. Zana; J. Zhang; Z. W. Zhao; I. Zonta

doi:10.1016/j.physletb.2016.01.044

First measurement of the helicity asymmetry E in η photoproduction on the proton

I. Senderovich, B. T. Morrison, M. Dugger, B. G. Ritchie, E. Pasyuk, R. Tucker, J. Brock, C. Carlin, C. D. Keith, D. G. Meekins, M. L. Seely, D. Rönchen, M. Döring, P. Collins, K. P. Adhikari, D. Adikaram, Z. Akbar, M. D. Anderson, S. Anefalos Pereira, R. A. BaduiJ. Ball, N. A. Baltzell, M. Battaglieri, V. Batourine, I. Bedlinskiy, A. S. Biselli, S. Boiarinov, W. J. Briscoe, W. K. Brooks, V. D. Burkert, D. S. Carman, A. Celentano, S. Chandavar, G. Charles, L. Colaneri, P. L. Cole, M. Contalbrigo, O. Cortes, V. Credé, 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, G. Fedotov, S. Fegan, A. Filippi, J. A. Fleming, A. Fradi, B. Garillon, Y. Ghandilyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, D. I. Glazier, J. T. Goetz, W. Gohn, E. Golovatch, R. W. Gothe, K. A. Griffioen, M. Guidal, L. Guo, K. Hafidi, H. Hakobyan, C. Hanretty, M. Hattawy, K. Hicks, D. Ho, M. Holtrop, S. M. Hughes, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, D. Jenkins, H. Jiang, H. S. Jo, K. Joo, S. Joosten, D. Keller, G. Khachatryan, M. Khandaker, A. Kim, F. J. Klein, V. Kubarovsky, M. C. Kunkel, P. Lenisa, K. Livingston, H. Y. Lu, I. J.D. MacGregor, P. Mattione, B. McKinnon, C. A. Meyer, T. Mineeva, V. Mokeev, R. A. Montgomery, A. Movsisyan, C. Munoz Camacho, P. Nadel-Turonski, L. A. Net, S. Niccolai, G. Niculescu, I. Niculescu, M. Osipenko, K. Park, S. Park, P. Peng, W. Phelps, S. Pisano, O. Pogorelko, J. W. Price, Y. Prok, A. J.R. Puckett, M. Ripani, A. Rizzo, G. Rosner, P. Roy, F. Sabatié, C. Salgado, D. Schott, R. A. Schumacher, E. Seder, A. Simonyan, Iu Skorodumina, G. D. Smith, D. I. Sober, N. Sparveris, S. Stepanyan, P. Stoler, I. I. Strakovsky, S. Strauch, V. Sytnik, Ye Tian, M. Ungaro, H. Voskanyan, E. Voutier, N. K. Walford, X. Wei, M. H. Wood, N. Zachariou, L. Zana, J. Zhang, Z. W. Zhao, I. Zonta

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Abstract

Results are presented for the first measurement of the double-polarization helicity asymmetry E for the η photoproduction reaction γp→ηp. Data were obtained using the FROzen Spin Target (FROST) with the CLAS spectrometer in Hall B at Jefferson Lab, covering a range of center-of-mass energy W from threshold to 2.15 GeV and a large range in center-of-mass polar angle. As an initial application of these data, the results have been incorporated into the Jülich–Bonn model to examine the case for the existence of a narrow N^⁎ resonance between 1.66 and 1.70 GeV. The addition of these data to the world database results in marked changes in the predictions for the E observable from that model. Further comparison with several theoretical approaches indicates these data will significantly enhance our understanding of nucleon resonances.

Original language	English
Pages (from-to)	64-69
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	755
DOIs	https://doi.org/10.1016/j.physletb.2016.01.044
State	Published - 10 Apr 2016

Keywords

Eta photoproduction
Helicity asymmetry
Polarization observable

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10.1016/j.physletb.2016.01.044

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Senderovich, I., Morrison, B. T., Dugger, M., Ritchie, B. G., Pasyuk, E., Tucker, R., Brock, J., Carlin, C., Keith, C. D., Meekins, D. G., Seely, M. L., Rönchen, D., Döring, M., Collins, P., Adhikari, K. P., Adikaram, D., Akbar, Z., Anderson, M. D., Anefalos Pereira, S., ... Zonta, I. (2016). First measurement of the helicity asymmetry E in η photoproduction on the proton. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 755, 64-69. https://doi.org/10.1016/j.physletb.2016.01.044

@article{b233253caccb410caae04a0a059ca16e,

title = "First measurement of the helicity asymmetry E in η photoproduction on the proton",

abstract = "Results are presented for the first measurement of the double-polarization helicity asymmetry E for the η photoproduction reaction γp→ηp. Data were obtained using the FROzen Spin Target (FROST) with the CLAS spectrometer in Hall B at Jefferson Lab, covering a range of center-of-mass energy W from threshold to 2.15 GeV and a large range in center-of-mass polar angle. As an initial application of these data, the results have been incorporated into the J{\"u}lich–Bonn model to examine the case for the existence of a narrow N⁎ resonance between 1.66 and 1.70 GeV. The addition of these data to the world database results in marked changes in the predictions for the E observable from that model. Further comparison with several theoretical approaches indicates these data will significantly enhance our understanding of nucleon resonances.",

keywords = "Eta photoproduction, Helicity asymmetry, Polarization observable",

author = "I. Senderovich and Morrison, {B. T.} and M. Dugger and Ritchie, {B. G.} and E. Pasyuk and R. Tucker and J. Brock and C. Carlin and Keith, {C. D.} and Meekins, {D. G.} and Seely, {M. L.} and D. R{\"o}nchen and M. D{\"o}ring and P. Collins and Adhikari, {K. P.} and D. Adikaram and Z. Akbar and Anderson, {M. D.} and {Anefalos Pereira}, S. and Badui, {R. A.} and J. Ball and Baltzell, {N. A.} and M. Battaglieri and V. Batourine and I. Bedlinskiy and Biselli, {A. S.} and S. Boiarinov and Briscoe, {W. J.} and Brooks, {W. K.} and Burkert, {V. D.} and Carman, {D. S.} and A. Celentano and S. Chandavar and G. Charles and L. Colaneri and Cole, {P. L.} and M. Contalbrigo and O. Cortes and V. Cred{\'e} 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 G. Fedotov and S. Fegan and A. Filippi and Fleming, {J. A.} and A. Fradi and B. Garillon and Y. Ghandilyan and Gilfoyle, {G. P.} and Giovanetti, {K. L.} and Girod, {F. X.} and Glazier, {D. I.} and Goetz, {J. T.} and W. Gohn and E. Golovatch and Gothe, {R. W.} and Griffioen, {K. A.} and M. Guidal and L. Guo and K. Hafidi and H. Hakobyan and C. Hanretty and M. Hattawy and K. Hicks and D. Ho and M. Holtrop and Hughes, {S. M.} and Y. Ilieva and Ireland, {D. G.} and Ishkhanov, {B. S.} and D. Jenkins and H. Jiang and Jo, {H. S.} and K. Joo and S. Joosten and D. Keller and G. Khachatryan and M. Khandaker and A. Kim and Klein, {F. J.} and V. Kubarovsky and Kunkel, {M. C.} and P. Lenisa and K. Livingston and Lu, {H. Y.} and MacGregor, {I. J.D.} and P. Mattione and B. McKinnon and Meyer, {C. A.} and T. Mineeva and V. Mokeev and Montgomery, {R. A.} and A. Movsisyan and {Munoz Camacho}, C. and P. Nadel-Turonski and Net, {L. A.} and S. Niccolai and G. Niculescu and I. Niculescu and M. Osipenko and K. Park and S. Park and P. Peng and W. Phelps and S. Pisano and O. Pogorelko and Price, {J. W.} and Y. Prok and Puckett, {A. J.R.} and M. Ripani and A. Rizzo and G. Rosner and P. Roy and F. Sabati{\'e} and C. Salgado and D. Schott and Schumacher, {R. A.} and E. Seder and A. Simonyan and Iu Skorodumina and Smith, {G. D.} and Sober, {D. I.} and N. Sparveris and S. Stepanyan and P. Stoler and Strakovsky, {I. I.} and S. Strauch and V. Sytnik and Ye Tian and M. Ungaro and H. Voskanyan and E. Voutier and Walford, {N. K.} and X. Wei and Wood, {M. H.} and N. Zachariou and L. Zana and J. Zhang and Zhao, {Z. W.} and I. Zonta",

note = "Publisher Copyright: {\textcopyright} 2016",

year = "2016",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2016.01.044",

language = "English",

volume = "755",

pages = "64--69",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Senderovich, I, Morrison, BT, Dugger, M, Ritchie, BG, Pasyuk, E, Tucker, R, Brock, J, Carlin, C, Keith, CD, Meekins, DG, Seely, ML, Rönchen, D, Döring, M, Collins, P, Adhikari, KP, Adikaram, D, Akbar, Z, Anderson, MD, Anefalos Pereira, S, Badui, RA, Ball, J, Baltzell, NA, Battaglieri, M, Batourine, V, Bedlinskiy, I, Biselli, AS, Boiarinov, S, Briscoe, WJ, Brooks, WK, Burkert, VD, Carman, DS, Celentano, A, Chandavar, S, Charles, G, Colaneri, L, Cole, PL, Contalbrigo, M, Cortes, O, Credé, 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, Fedotov, G, Fegan, S, Filippi, A, Fleming, JA, Fradi, A, Garillon, B, Ghandilyan, Y, Gilfoyle, GP, Giovanetti, KL, Girod, FX, Glazier, DI, Goetz, JT, Gohn, W, Golovatch, E, Gothe, RW, Griffioen, KA, Guidal, M, Guo, L, Hafidi, K, Hakobyan, H, Hanretty, C, Hattawy, M, Hicks, K, Ho, D, Holtrop, M, Hughes, SM, Ilieva, Y, Ireland, DG, Ishkhanov, BS, Jenkins, D, Jiang, H, Jo, HS, Joo, K, Joosten, S, Keller, D, Khachatryan, G, Khandaker, M, Kim, A, Klein, FJ, Kubarovsky, V, Kunkel, MC, Lenisa, P, Livingston, K, Lu, HY, MacGregor, IJD, Mattione, P, McKinnon, B, Meyer, CA, Mineeva, T, Mokeev, V, Montgomery, RA, Movsisyan, A, Munoz Camacho, C, Nadel-Turonski, P, Net, LA, Niccolai, S, Niculescu, G, Niculescu, I, Osipenko, M, Park, K, Park, S, Peng, P, Phelps, W, Pisano, S, Pogorelko, O, Price, JW, Prok, Y, Puckett, AJR, Ripani, M, Rizzo, A, Rosner, G, Roy, P, Sabatié, F, Salgado, C, Schott, D, Schumacher, RA, Seder, E, Simonyan, A, Skorodumina, I, Smith, GD, Sober, DI, Sparveris, N, Stepanyan, S, Stoler, P, Strakovsky, II, Strauch, S, Sytnik, V, Tian, Y, Ungaro, M, Voskanyan, H, Voutier, E, Walford, NK, Wei, X, Wood, MH, Zachariou, N, Zana, L, Zhang, J, Zhao, ZW & Zonta, I 2016, 'First measurement of the helicity asymmetry E in η photoproduction on the proton', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 755, pp. 64-69. https://doi.org/10.1016/j.physletb.2016.01.044

TY - JOUR

T1 - First measurement of the helicity asymmetry E in η photoproduction on the proton

AU - Senderovich, I.

AU - Morrison, B. T.

AU - Dugger, M.

AU - Ritchie, B. G.

AU - Pasyuk, E.

AU - Tucker, R.

AU - Brock, J.

AU - Carlin, C.

AU - Keith, C. D.

AU - Meekins, D. G.

AU - Seely, M. L.

AU - Rönchen, D.

AU - Döring, M.

AU - Collins, P.

AU - Adhikari, K. P.

AU - Adikaram, D.

AU - Akbar, Z.

AU - Anderson, M. D.

AU - Anefalos Pereira, S.

AU - Badui, R. A.

AU - Ball, J.

AU - Baltzell, N. A.

AU - Battaglieri, M.

AU - Batourine, V.

AU - Bedlinskiy, I.

AU - Biselli, A. S.

AU - Boiarinov, S.

AU - Briscoe, W. J.

AU - Brooks, W. K.

AU - Burkert, V. D.

AU - Carman, D. S.

AU - Celentano, A.

AU - Chandavar, S.

AU - Charles, G.

AU - Colaneri, L.

AU - Cole, P. L.

AU - Contalbrigo, M.

AU - Cortes, O.

AU - Credé, 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 - Fedotov, G.

AU - Fegan, S.

AU - Filippi, A.

AU - Fleming, J. A.

AU - Fradi, A.

AU - Garillon, B.

AU - Ghandilyan, Y.

AU - Gilfoyle, G. P.

AU - Giovanetti, K. L.

AU - Girod, F. X.

AU - Glazier, D. I.

AU - Goetz, J. T.

AU - Gohn, W.

AU - Golovatch, E.

AU - Gothe, R. W.

AU - Griffioen, K. A.

AU - Guidal, M.

AU - Guo, L.

AU - Hafidi, K.

AU - Hakobyan, H.

AU - Hanretty, C.

AU - Hattawy, M.

AU - Hicks, K.

AU - Ho, D.

AU - Holtrop, M.

AU - Hughes, S. M.

AU - Ilieva, Y.

AU - Ireland, D. G.

AU - Ishkhanov, B. S.

AU - Jenkins, D.

AU - Jiang, H.

AU - Jo, H. S.

AU - Joo, K.

AU - Joosten, S.

AU - Keller, D.

AU - Khachatryan, G.

AU - Khandaker, M.

AU - Kim, A.

AU - Klein, F. J.

AU - Kubarovsky, V.

AU - Kunkel, M. C.

AU - Lenisa, P.

AU - Livingston, K.

AU - Lu, H. Y.

AU - MacGregor, I. J.D.

AU - Mattione, P.

AU - McKinnon, B.

AU - Meyer, C. A.

AU - Mineeva, T.

AU - Mokeev, V.

AU - Montgomery, R. A.

AU - Movsisyan, A.

AU - Munoz Camacho, C.

AU - Nadel-Turonski, P.

AU - Net, L. A.

AU - Niccolai, S.

AU - Niculescu, G.

AU - Niculescu, I.

AU - Osipenko, M.

AU - Park, K.

AU - Park, S.

AU - Peng, P.

AU - Phelps, W.

AU - Pisano, S.

AU - Pogorelko, O.

AU - Price, J. W.

AU - Prok, Y.

AU - Puckett, A. J.R.

AU - Ripani, M.

AU - Rizzo, A.

AU - Rosner, G.

AU - Roy, P.

AU - Sabatié, F.

AU - Salgado, C.

AU - Schott, D.

AU - Schumacher, R. A.

AU - Seder, E.

AU - Simonyan, A.

AU - Skorodumina, Iu

AU - Smith, G. D.

AU - Sober, D. I.

AU - Sparveris, N.

AU - Stepanyan, S.

AU - Stoler, P.

AU - Strakovsky, I. I.

AU - Strauch, S.

AU - Sytnik, V.

AU - Tian, Ye

AU - Ungaro, M.

AU - Voskanyan, H.

AU - Voutier, E.

AU - Walford, N. K.

AU - Wei, X.

AU - Wood, M. H.

AU - Zachariou, N.

AU - Zana, L.

AU - Zhang, J.

AU - Zhao, Z. W.

AU - Zonta, I.

PY - 2016/4/10

Y1 - 2016/4/10

N2 - Results are presented for the first measurement of the double-polarization helicity asymmetry E for the η photoproduction reaction γp→ηp. Data were obtained using the FROzen Spin Target (FROST) with the CLAS spectrometer in Hall B at Jefferson Lab, covering a range of center-of-mass energy W from threshold to 2.15 GeV and a large range in center-of-mass polar angle. As an initial application of these data, the results have been incorporated into the Jülich–Bonn model to examine the case for the existence of a narrow N⁎ resonance between 1.66 and 1.70 GeV. The addition of these data to the world database results in marked changes in the predictions for the E observable from that model. Further comparison with several theoretical approaches indicates these data will significantly enhance our understanding of nucleon resonances.

AB - Results are presented for the first measurement of the double-polarization helicity asymmetry E for the η photoproduction reaction γp→ηp. Data were obtained using the FROzen Spin Target (FROST) with the CLAS spectrometer in Hall B at Jefferson Lab, covering a range of center-of-mass energy W from threshold to 2.15 GeV and a large range in center-of-mass polar angle. As an initial application of these data, the results have been incorporated into the Jülich–Bonn model to examine the case for the existence of a narrow N⁎ resonance between 1.66 and 1.70 GeV. The addition of these data to the world database results in marked changes in the predictions for the E observable from that model. Further comparison with several theoretical approaches indicates these data will significantly enhance our understanding of nucleon resonances.

KW - Eta photoproduction

KW - Helicity asymmetry

KW - Polarization observable

UR - http://www.scopus.com/inward/record.url?scp=85011036722&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2016.01.044

DO - 10.1016/j.physletb.2016.01.044

M3 - Article

AN - SCOPUS:85011036722

SN - 0370-2693

VL - 755

SP - 64

EP - 69

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

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

ER -

First measurement of the helicity asymmetry E in η photoproduction on the proton

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