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Title: Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory

Abstract

Photoproduction cross sections are reported for the reaction γ p → p η using energy-tagged photons and the CLAS spectrometer at Jefferson Laboratory. The η mesons are detected in their dominant charged decay mode, η → π + π - π0, and results on differential cross sections are presented for incident photon energies between 1.2 and 4.7 GeV. These new η photoproduction data are consistent with earlier CLAS results but extend the energy range beyond the nucleon resonance region into the Regge regime. The normalized angular distributions are also compared with the experimental results from several other experiments, and with predictions of η -MAID 2018 and the latest solution of the Bonn-Gatchina coupled-channel analysis. Differential cross sections d σ / d t are presented for incident photon energies E γ > 2.9 GeV ( W > 2.5 GeV ), and compared with predictions which are based on Regge trajectories exchange in the t -channel (Regge models). The data confirm the expected dominance of ρ , ω vector-meson exchange in an analysis by the Joint Physics Analysis Center.

Authors:
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Publication Date:
Research Org.:
Mississippi State Univ., Mississippi State, MS (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); Centre National de la Recherche Scientifique (CNRS); National Research Foundation of Korea (NRF); Instituto Nazionale di Fisica Nucleare (INFN); Commissariat a l’Energie Atomique (CEA); Chilean Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT); United Kingdom Science and Technology Facilities Council; Scottish Universities Physics Alliance (SUPA)
Contributing Org.:
CLAS Collaboration
OSTI Identifier:
1735831
Alternate Identifier(s):
OSTI ID: 1781686; OSTI ID: 1787253
Report Number(s):
JLAB-PHY-20-3201; DOE/OR/23177-4979; arXiv:2006.01361
Journal ID: ISSN 2469-9985
Grant/Contract Number:  
FG02-07ER41528; FG02-92ER40735; AC05-06OR23177; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 102; Journal Issue: 6; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Photonuclear reactions; QCD in nuclear reactions; resonance reactions; light mesons; protons

Citation Formats

Hu, T., Akbar, Z., Crede, V., Adhikari, K. P., Adhikari, S., Amaryan, M. J., Angelini, G., Asryan, G., Atac, H., Ayerbe Gayoso, C., Barion, L., Battaglieri, M., Bedlinskiy, I., Benmokhtar, F., Bianconi, A., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Carman, D. S., Carvajal, J., Celentano, A., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Clary, B. A., Cole, P. L., Contalbrigo, M., Cruz-Torres, R., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dugger, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Gavalian, G., Gilfoyle, G. P., Girod, F. X., Glazier, D. I., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Ilieva, Y., Illari, I., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khachatryan, M., Khanal, A., Khandaker, M., Kim, A., Kim, C. W., Kim, W., Klein, F. J., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., MacGregor, I. D., Marchand, D., Markov, N., Mascagna, V., McCracken, M. E., McKinnon, B., Meyer, C. A., Meziani, Z. E., Mineeva, T., Mokeev, V., Movsisyan, A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Niccolai, S., Niculescu, G., O'Connell, T., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Poudel, J., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rowley, J., Sabatié, F., Salgado, C., Schmidt, A., Schumacher, R. A., Sharabian, Y. G., Shrestha, U., Skorodumina, Iu, Sokhan, D., Soto, O., Sparveris, N., Stepanyan, S., Stoler, P., Strakovsky, I. I., Strauch, S., Tan, J. A., Tyler, N., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, K., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., and Zhao, Z. W.. Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory. United States: N. p., 2020. Web. https://doi.org/10.1103/physrevc.102.065203.
Hu, T., Akbar, Z., Crede, V., Adhikari, K. P., Adhikari, S., Amaryan, M. J., Angelini, G., Asryan, G., Atac, H., Ayerbe Gayoso, C., Barion, L., Battaglieri, M., Bedlinskiy, I., Benmokhtar, F., Bianconi, A., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Carman, D. S., Carvajal, J., Celentano, A., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Clary, B. A., Cole, P. L., Contalbrigo, M., Cruz-Torres, R., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dugger, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Gavalian, G., Gilfoyle, G. P., Girod, F. X., Glazier, D. I., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Ilieva, Y., Illari, I., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khachatryan, M., Khanal, A., Khandaker, M., Kim, A., Kim, C. W., Kim, W., Klein, F. J., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., MacGregor, I. D., Marchand, D., Markov, N., Mascagna, V., McCracken, M. E., McKinnon, B., Meyer, C. A., Meziani, Z. E., Mineeva, T., Mokeev, V., Movsisyan, A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Niccolai, S., Niculescu, G., O'Connell, T., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Poudel, J., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rowley, J., Sabatié, F., Salgado, C., Schmidt, A., Schumacher, R. A., Sharabian, Y. G., Shrestha, U., Skorodumina, Iu, Sokhan, D., Soto, O., Sparveris, N., Stepanyan, S., Stoler, P., Strakovsky, I. I., Strauch, S., Tan, J. A., Tyler, N., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, K., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., & Zhao, Z. W.. Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory. United States. https://doi.org/10.1103/physrevc.102.065203
Hu, T., Akbar, Z., Crede, V., Adhikari, K. P., Adhikari, S., Amaryan, M. J., Angelini, G., Asryan, G., Atac, H., Ayerbe Gayoso, C., Barion, L., Battaglieri, M., Bedlinskiy, I., Benmokhtar, F., Bianconi, A., Biselli, A. S., Bossù, F., Boiarinov, S., Briscoe, W. J., Brooks, W. K., Carman, D. S., Carvajal, J., Celentano, A., Chatagnon, P., Chetry, T., Ciullo, G., Clark, L., Clary, B. A., Cole, P. L., Contalbrigo, M., Cruz-Torres, R., D'Angelo, A., Dashyan, N., De Vita, R., Defurne, M., Deur, A., Diehl, S., Djalali, C., Dugger, M., Dupre, R., Egiyan, H., Ehrhart, M., El Alaoui, A., El Fassi, L., Eugenio, P., Fedotov, G., Fersch, R., Filippi, A., Gavalian, G., Gilfoyle, G. P., Girod, F. X., Glazier, D. I., Golovatch, E., Gothe, R. W., Griffioen, K. A., Guidal, M., Guo, L., Hafidi, K., Hakobyan, H., Hanretty, C., Harrison, N., Hattawy, M., Hayward, T. B., Heddle, D., Hicks, K., Hobart, A., Holtrop, M., Ilieva, Y., Illari, I., Ireland, D. G., Ishkhanov, B. S., Isupov, E. L., Jenkins, D., Jo, H. S., Joo, K., Joosten, S., Keller, D., Khachatryan, M., Khanal, A., Khandaker, M., Kim, A., Kim, C. W., Kim, W., Klein, F. J., Kubarovsky, V., Lanza, L., Leali, M., Lenisa, P., Livingston, K., MacGregor, I. D., Marchand, D., Markov, N., Mascagna, V., McCracken, M. E., McKinnon, B., Meyer, C. A., Meziani, Z. E., Mineeva, T., Mokeev, V., Movsisyan, A., Munevar, E., Munoz Camacho, C., Nadel-Turonski, P., Niccolai, S., Niculescu, G., O'Connell, T., Osipenko, M., Ostrovidov, A. I., Paolone, M., Pappalardo, L. L., Paremuzyan, R., Pasyuk, E., Phelps, W., Pogorelko, O., Poudel, J., Price, J. W., Prok, Y., Protopopescu, D., Raue, B. A., Ripani, M., Ritman, J., Rizzo, A., Rosner, G., Rowley, J., Sabatié, F., Salgado, C., Schmidt, A., Schumacher, R. A., Sharabian, Y. G., Shrestha, U., Skorodumina, Iu, Sokhan, D., Soto, O., Sparveris, N., Stepanyan, S., Stoler, P., Strakovsky, I. I., Strauch, S., Tan, J. A., Tyler, N., Ungaro, M., Venturelli, L., Voskanyan, H., Voutier, E., Watts, D. P., Wei, K., Wei, X., Wood, M. H., Zachariou, N., Zhang, J., and Zhao, Z. W.. Mon . "Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory". United States. https://doi.org/10.1103/physrevc.102.065203.
@article{osti_1735831,
title = {Photoproduction of η mesons off the proton for 1.2 < Eγ < 4.7GeV using CLAS at Jefferson Laboratory},
author = {Hu, T. and Akbar, Z. and Crede, V. and Adhikari, K. P. and Adhikari, S. and Amaryan, M. J. and Angelini, G. and Asryan, G. and Atac, H. and Ayerbe Gayoso, C. and Barion, L. and Battaglieri, M. and Bedlinskiy, I. and Benmokhtar, F. and Bianconi, A. and Biselli, A. S. and Bossù, F. and Boiarinov, S. and Briscoe, W. J. and Brooks, W. K. and Carman, D. S. and Carvajal, J. and Celentano, A. and Chatagnon, P. and Chetry, T. and Ciullo, G. and Clark, L. and Clary, B. A. and Cole, P. L. and Contalbrigo, M. and Cruz-Torres, R. and D'Angelo, A. and Dashyan, N. and De Vita, R. and Defurne, M. and Deur, A. and Diehl, S. and Djalali, C. and Dugger, M. and Dupre, R. and Egiyan, H. and Ehrhart, M. and El Alaoui, A. and El Fassi, L. and Eugenio, P. and Fedotov, G. and Fersch, R. and Filippi, A. and Gavalian, G. and Gilfoyle, G. P. and Girod, F. X. and Glazier, D. I. and Golovatch, E. and Gothe, R. W. and Griffioen, K. A. and Guidal, M. and Guo, L. and Hafidi, K. and Hakobyan, H. and Hanretty, C. and Harrison, N. and Hattawy, M. and Hayward, T. B. and Heddle, D. and Hicks, K. and Hobart, A. and Holtrop, M. and Ilieva, Y. and Illari, I. and Ireland, D. G. and Ishkhanov, B. S. and Isupov, E. L. and Jenkins, D. and Jo, H. S. and Joo, K. and Joosten, S. and Keller, D. and Khachatryan, M. and Khanal, A. and Khandaker, M. and Kim, A. and Kim, C. W. and Kim, W. and Klein, F. J. and Kubarovsky, V. and Lanza, L. and Leali, M. and Lenisa, P. and Livingston, K. and MacGregor, I. D. and Marchand, D. and Markov, N. and Mascagna, V. and McCracken, M. E. and McKinnon, B. and Meyer, C. A. and Meziani, Z. E. and Mineeva, T. and Mokeev, V. and Movsisyan, A. and Munevar, E. and Munoz Camacho, C. and Nadel-Turonski, P. and Niccolai, S. and Niculescu, G. and O'Connell, T. and Osipenko, M. and Ostrovidov, A. I. and Paolone, M. and Pappalardo, L. L. and Paremuzyan, R. and Pasyuk, E. and Phelps, W. and Pogorelko, O. and Poudel, J. and Price, J. W. and Prok, Y. and Protopopescu, D. and Raue, B. A. and Ripani, M. and Ritman, J. and Rizzo, A. and Rosner, G. and Rowley, J. and Sabatié, F. and Salgado, C. and Schmidt, A. and Schumacher, R. A. and Sharabian, Y. G. and Shrestha, U. and Skorodumina, Iu and Sokhan, D. and Soto, O. and Sparveris, N. and Stepanyan, S. and Stoler, P. and Strakovsky, I. I. and Strauch, S. and Tan, J. A. and Tyler, N. and Ungaro, M. and Venturelli, L. and Voskanyan, H. and Voutier, E. and Watts, D. P. and Wei, K. and Wei, X. and Wood, M. H. and Zachariou, N. and Zhang, J. and Zhao, Z. W.},
abstractNote = {Photoproduction cross sections are reported for the reaction γ p → p η using energy-tagged photons and the CLAS spectrometer at Jefferson Laboratory. The η mesons are detected in their dominant charged decay mode, η → π + π - π0, and results on differential cross sections are presented for incident photon energies between 1.2 and 4.7 GeV. These new η photoproduction data are consistent with earlier CLAS results but extend the energy range beyond the nucleon resonance region into the Regge regime. The normalized angular distributions are also compared with the experimental results from several other experiments, and with predictions of η -MAID 2018 and the latest solution of the Bonn-Gatchina coupled-channel analysis. Differential cross sections d σ / d t are presented for incident photon energies E γ > 2.9 GeV ( W > 2.5 GeV ), and compared with predictions which are based on Regge trajectories exchange in the t -channel (Regge models). The data confirm the expected dominance of ρ , ω vector-meson exchange in an analysis by the Joint Physics Analysis Center.},
doi = {10.1103/physrevc.102.065203},
journal = {Physical Review C},
number = 6,
volume = 102,
place = {United States},
year = {2020},
month = {12}
}

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Analysis of recent $ \eta$ photoproduction data
journal, October 2010


The polarised beam asymmetry in photoproduction of eta mesons from protons at 2.5 GeV and 3.0 GeV
journal, April 1976


Development of high intensity laser-electron photon beams up to 2.9GeV at the SPring-8 LEPS beamline
journal, February 2014

  • Muramatsu, N.; Kon, Y.; Daté, S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 737
  • DOI: 10.1016/j.nima.2013.11.039

The crystal barrel spectrometer at LEAR
journal, September 1992

  • Aker, E.; Amsler, C.; Augustin, I.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 321, Issue 1-2
  • DOI: 10.1016/0168-9002(92)90379-I

Ξ * photoproduction from threshold to W = 3.3 GeV
journal, December 2018