Comprehensive measurement of <math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mrow><mi>η</mi></mrow><mo>′</mo></msup></math> photoproduction off the proton at <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msub><mi>E</mi><mi>γ</mi></msub><mo><</mo><mn>2.4</mn><mspace width="0.28em"></mspace><mi>GeV</mi></mrow></math>

BGOegg Collaboration; N. Muramatsu; J. K. Ahn; W. C. Chang; J. Y. Chen; M. L. Chu; S. Daté; T. Gogami; H. Hamano; T. Hashimoto; Q. H. He; K. Hicks; T. Hiraiwa; Y. Honda; T. Hotta; Y. Inoue; T. Ishikawa; I. Jaegle; Y. Kasamatsu; V. L. Kashevarov; H. Katsuragawa; S. Kido; R. Kobayakawa; Y. Kon; S. Masumoto; Y. Matsumura; M. Miyabe; K. Mizutani; T. Z. Mo; T. Nakamura; T. Nakano; T. Nam; M. Niiyama; K. V. Nikonov; Y. Nozawa; Y. Ohashi; H. Ohnishi; T. Ohta; M. Okabe; K. Ozawa; C. Rangacharyulu; S. Y. Ryu; Y. Sada; A. V. Sarantsev; T. Shibukawa; H. Shimizu; R. Shirai; K. Shiraishi; E. A. Strokovsky; Y. Sugaya; M. Sumihama; S. Suzuki; S. Tanaka; Y. Taniguchi; A. Tokiyasu; N. Tomida; Y. Tsuchikawa; T. Ueda; T. F. Wang; H. Yamazaki; R. Yamazaki; Y. Yanai; T. Yorita; C. Yoshida; M. Yosoi

doi:10.1103/s7m3-8xjq

Letter

Comprehensive measurement of $η^{'}$ photoproduction off the proton at $E_{γ} < 2.4 GeV$

N. Muramatsu ¹, J. K. Ahn², W. C. Chang³, J. Y. Chen⁴, M. L. Chu³, S. Daté⁵, T. Gogami⁶, H. Hamano⁵, T. Hashimoto⁵ et al. (BGOegg Collaboration)

T. Hashimoto⁵, Q. H. He⁷, K. Hicks⁸, T. Hiraiwa⁹, Y. Honda¹⁰, T. Hotta⁵, Y. Inoue¹⁰, T. Ishikawa⁵, I. Jaegle¹¹, Y. Kasamatsu⁵, V. L. Kashevarov¹², H. Katsuragawa⁵, S. Kido¹⁰, R. Kobayakawa⁵, Y. Kon⁵, S. Masumoto¹³, Y. Matsumura¹⁰, M. Miyabe¹⁰, K. Mizutani⁵, T. Z. Mo⁷, T. Nakamura¹⁴, T. Nakano⁵, T. Nam¹⁵, M. Niiyama¹⁶, K. V. Nikonov¹⁷, Y. Nozawa¹⁸, Y. Ohashi⁵, H. Ohnishi¹⁰, T. Ohta¹⁸, M. Okabe¹⁰, K. Ozawa¹⁹, C. Rangacharyulu²⁰, S. Y. Ryu⁵, Y. Sada¹⁰, A. V. Sarantsev¹⁷, T. Shibukawa¹³, H. Shimizu¹⁰, R. Shirai¹⁰, K. Shiraishi¹⁰, E. A. Strokovsky²¹, Y. Sugaya⁵, M. Sumihama^14,5, S. Suzuki^22,5, S. Tanaka⁵, Y. Taniguchi¹⁰, A. Tokiyasu¹⁰, N. Tomida⁶, Y. Tsuchikawa²³, T. Ueda¹⁰, T. F. Wang²⁴, H. Yamazaki²⁵, R. Yamazaki¹⁰, Y. Yanai⁵, T. Yorita⁵, C. Yoshida²⁶, and M. Yosoi⁵ (BGOegg Collaboration)

¹Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
²Department of Physics, Korea University, Seoul 02841, Republic of Korea
³Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
⁴National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
⁵Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
⁶Department of Physics, Kyoto University, Kyoto 606-8502, Japan
⁷Department of Nuclear Science and Technology, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
⁸Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
⁹RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
¹⁰Research Center for Accelerator and Radioisotope Science, Tohoku University, Sendai, Miyagi 982-0826, Japan
¹¹Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
¹²Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
¹³Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
¹⁴Department of Education, Gifu University, Gifu 501-1193, Japan
¹⁵Dalat Nuclear Research Institute, Dalat, Lam Dong, Vietnam
¹⁶Department of Physics, Kyoto Sangyo University, Kyoto 603-8555, Japan
¹⁷NRC Kurchatov Institute, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
¹⁸Department of Radiology, The University of Tokyo Hospital, Tokyo 113-8655, Japan
¹⁹Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
²⁰Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Canada SK S7N 5E2
²¹Laboratory of High Energy Physics, Joint Institute for Nuclear Research, Dubna, Moscow Region 142281, Russia
²²Japan Synchrotron Radiation Research Institute (SPring-8), Sayo, Hyogo 679-5198, Japan
²³J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
²⁴School of Physics, Beihang University, Beijing 100191, China
²⁵Radiation Science Center, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki 319-1195, Japan
²⁶Instrumentation Technology Development Center, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan

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Phys. Rev. C 113, L062201 – Published 25 June, 2026

DOI: https://doi.org/10.1103/s7m3-8xjq

Abstract

For the spectroscopy of nucleon resonances at the total energies from the $η^{'}$ -meson production threshold to 2.32 $GeV$ , photon beam asymmetries of the reaction $γ p \to η^{'} p$ were measured together with total and differential cross sections by analyzing the two decay modes $η^{'} \to γ γ$ and $π^{0} π^{0} η$ . New constraints for amplitude decomposition were given by the first-time result of photon beam asymmetries at $E_{γ} > 1.84 GeV$ and the most precise data of differential cross sections to date at extremely backward $η^{'}$ angles. The possibility of a larger coupling constant of the $η^{'}$ -nucleon system to the $N (2250)$ resonance was implied in the partial wave analyses using the present data.

Physical Review C

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Comprehensive measurement of $η^{'}$ photoproduction off the proton at $E_{γ} < 2.4 GeV$

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Comprehensive measurement of η′ photoproduction off the proton at Eγ<2.4GeV

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Comprehensive measurement of $η^{'}$ photoproduction off the proton at $E_{γ} < 2.4 GeV$