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    Zachariou, N.; McAndrew, J.; Zana, L.; Bashkanov, M.; Strakovsky, I. I.; Workman, R.; Adhikari, S.; Angelini, G.; Armstrong, W. R.; Baltzell, N. A.; Battaglieri, M.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bondi, M.; Bossù, F.; Boiarinov, S.; Brooks, W. K.; Bulumulla, D.; Carman, D. S.; Carvajal, J. C.; Celentano, A.; Chetry, T.; Cole, P. L.; Crede, V.; D'Angelo, A.; De Vita, R.; Deur, A.; Diehl, S.; Djalali, C.; El Alaoui, A.; El Fassi, L.; Fedotov, G.; Filippi, A.; Gavalian, G.; Gilfoyle, G. P.; Girod, F. X.; Gothe, R. W.; Griffioen, K. A.; Guo, L.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Heddle, D.; Hicks, K.; Hobart, A.; Ilieva, Y.; Ireland, D. G.; Jenkins, D.; Joo, K.; Joosten, S.; Keller, D.; Khanal, A.; Khandaker, M.; Kim, A.; Kripko, A.; Lanza, L.; Leali, M.; Lenisa, P.; Livingston, K.; MacGregor, I. J. D.; Marsicano, L.; Mascagna, V.; McKinnon, B.; Meziani, Z. E.; Mineeva, T.; Mokeev, V.; Munoz Camacho, C.; Nadel-Turonski, P.; Neupane, K.; Ni, A.; Niccolai, S.; Niculescu, G.; O'Connell, T. R.; Osipenko, M.; Paolone, M.; Pappalardo, L. L.; Pogorelko, O.; Protopopescu, D.; Ritchie, B. G.; Rizzo, A.; Rosner, G.; Rowley, J.; Sabatié, F.; Schumacher, R. A.; Sharabian, Y. G.; Shrestha, U.; Sokhan, D.; Soto, O.; Sparveris, N.; Stepanyan, S.; Strauch, S.; Tyler, N.; Venturelli, L.; Voskanyan, H.; Voutier, E.; Wei, X.; Yale, B.; Zhang, J.; Zhao, Z. W.

    Physics letters. B, 06/2021, Letnik: 817, Številka: C
    Journal Article

    We report measurements of p+ and p0 meson photoproduction from longitudinally spin-polarised protons by an energy tagged (0.73-2.3 GeV) and linearly polarised photon beam. A close to complete solid angle coverage for the reaction products was provided by the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The double-polarisation observable G is extracted from Maximum Likelihood fits to the data, enabling the first accurate determination for reaction ~ ~p ! ?+n while also significantly extending the kinematic coverage for ~ ~ ~p ! ?0p. This large data set provides an important constraint on the properties and spectrum of excited nucleon states decaying to Npi in the mass range from 1.4 to 2.2 GeV, as well as for background (non-resonant) photoproduction processes. The considerable improvement achieved in the description of the observable G within the SAID and Bonn-Gatchina approaches after implementation of our data, illustrates that the partial wave analyses now significantly extend the knowledge on Npi photoproduction amplitudes at W > 1:8 GeV. A partial wave analysis using the new high-precision data set have a large impact on the extracted properties of high-spin nucleon excited states.