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  • A multidimensional study of...
    Diehl, S.; Akbar, Z.; Atac, H.; Avagyan, H.; Ayerbe Gayoso, C.; Baashen, L.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Benkel, B.; Biselli, A.S.; Bondi, M.; Booth, W.A.; Bossù, F.; Boiarinov, S.; Briscoe, W.J.; Bueltmann, S.; Bulumulla, D.; Burkert, V.D.; Celentano, A.; Chatagnon, P.; Chesnokov, V.; Chetry, T.; Ciullo, G.; Clash, G.; D'Angelo, A.; Dashyan, N.; De Vita, R.; Defurne, M.; Djalali, C.; Dupre, R.; Ehrhart, M.; El Alaoui, A.; El Fassi, L.; Elouadrhiri, L.; Fegan, S.; Ghandilyan, Y.; Gilfoyle, G.P.; Glazier, D.I.; Golubenko, A.A.; Gosta, G.; Gothe, R.W.; Griffioen, K.A.; Hafidi, K.; Hakobyan, H.; Hattawy, M.; Hayward, T.B.; Heddle, D.; Hobart, A.; Ireland, D.G.; Isupov, E.L.; Jo, H.S.; Khachatryan, M.; Kripko, A.; Kubarovsky, V.; Lagerquist, V.; Laget, J.-M.; Lanza, L.; Lee, S.; Lenisa, P.; Li, X.; Livingston, K.; Marchand, D.; Mascagna, V.; McKinnon, B.; Meziani, Z.E.; Migliorati, S.; Mirazita, M.; Mokeev, V.; Munoz Camacho, C.; Naidoo, P.; Neupane, K.; Niccolai, S.; Niculescu, G.; Ouillon, M.; Pandey, P.; Pappalardo, L.L.; Paremuzyan, R.; Pasyuk, E.; Pilleux, N.; Poudel, J.; Richards, J.; Ripani, M.; Rossi, P.; Sabatié, F.; Schadmand, S.; Schmidt, A.; Sharabian, Y.; Shrestha, U.; Simmerling, P.; Sparveris, N.; Spreafico, M.; Tan, J.A.; Trotta, N.; Vallarino, S.; Venturelli, L.; Watts, D.P.; Wei, X.; Zachariou, N.; Zurek, M.

    Physics letters. B, 04/2023, Letnik: 839
    Journal Article

    A multidimensional extraction of the structure function ratio σLT′/σ0 from the hard exclusive e→p→e′nπ+ reaction above the resonance region has been performed. The study was done based on beam-spin asymmetry measurements using a 10.6 GeV incident electron beam on a liquid-hydrogen target and the CLAS12 spectrometer at Jefferson Lab. The measurements focus on the very forward regime (t/Q2 ≪ 1) with a wide kinematic range of xB in the valence regime (0.17 <xB < 0.55), and virtualities Q2 ranging from 1.5 GeV2 up to 6 GeV2. The results and their comparison to theoretical models based on Generalized Parton Distributions demonstrate the sensitivity to chiral-odd GPDs and the directly related tensor charge of the nucleon. In addition, the data is compared to an extension of a Regge formalism at high photon virtualities. It was found that the Regge model provides a better description at low Q2, while the GPD model is more appropriate at high Q2.