Details

Autor(en) / Beteiligte

• 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.

Titel

A multidimensional study of the structure function ratio σLT′/σ0 from hard exclusive π+ electro-production off protons in the GPD regime

Ist Teil von

• Physics letters. B, 2023-04, Vol.839, p.137761, Article 137761

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2023

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.