SFERA Archivio dei prodotti della Ricerca dell'Università di Ferrara

Deeply virtual Compton scattering (DVCS) allows one to probe generalized parton distributions describing the 3D structure of the nucleon. We report the first measurement of the DVCS beam-spin asymmetry using the CLAS12 spectrometer with a 10.2 and 10.6 GeV electron beam scattering from unpolarized protons. The results greatly extend the Q2 and Bjorken-x phase space beyond the existing data in the valence region and provide 1600 new data points measured with unprecedented statistical uncertainty, setting new, tight constraints for future phenomenological studies.

First CLAS12 Measurement of Deeply Virtual Compton Scattering Beam-Spin Asymmetries in the Extended Valence Region

Barion, L;Ciullo, G;Contalbrigo, M;Lenisa, P;Pappalardo, L L;Turisini, M;Vallarino, S;
2023

Abstract

Deeply virtual Compton scattering (DVCS) allows one to probe generalized parton distributions describing the 3D structure of the nucleon. We report the first measurement of the DVCS beam-spin asymmetry using the CLAS12 spectrometer with a 10.2 and 10.6 GeV electron beam scattering from unpolarized protons. The results greatly extend the Q2 and Bjorken-x phase space beyond the existing data in the valence region and provide 1600 new data points measured with unprecedented statistical uncertainty, setting new, tight constraints for future phenomenological studies.
2023
PHYSICAL REVIEW LETTERS
Christiaens, G; Defurne, M; Sokhan, D; Achenbach, P; Akbar, Z; Amaryan, M J; Atac, H; Avakian, H; Gayoso, C Ayerbe; Baashen, L; Baltzell, N A; Barion, L; Bashkanov, M; Battaglieri, M; Bedlinskiy, I; Benkel, B; Benmokhtar, F; Bianconi, A; Biselli, A S; Bondi, M; Booth, W A; Bossù, F; Boiarinov, S; Brinkmann, K-Th; Briscoe, W J; Bueltmann, S; Bulumulla, D; Burkert, V D; Cao, T; Carman, D S; Carvajal, J C; Celentano, A; Chatagnon, P; Chesnokov, V; Chetry, T; Ciullo, G; Clash, G; Cole, P L; Contalbrigo, M; Costantini, G; D'Angelo, A; Dashyan, N; De Vita, R; Deur, A; Diehl, S; Dilks, C; Djalali, C; Dupre, R; Egiyan, H; Ehrhart, M; Alaoui, A El; Fassi, L El; Elouadrhiri, L; Fegan, S; Filippi, A; Gates, K; Gavalian, G; Ghandilyan, Y; Gilfoyle, G P; Girod, F X; Glazier, D I; Golubenko, A A; Gosta, G; Gothe, R W; Gotra, Y; Griffioen, K A; Guidal, M; Hafidi, K; Hakobyan, H; Hattawy, M; Hauenstein, F; Hayward, T B; Heddle, D; Hobart, A; Holmberg, D E; Holtrop, M; Ilieva, Y; Ireland, D G; Isupov, E L; Jo, H S; Keller, D; Khachatryan, M; Khanal, A; Kim, W; Kripko, A; Kubarovsky, V; Kuhn, S E; Lagerquist, V; Lanza, L; Kabir, M L; Leali, M; Lee, S; Lenisa, P; Li, X; Livingston, K; Macgregor, I J D; Marchand, D; Mascagna, V; Matousek, G; Mckinnon, B; Mclauchlin, C; Meziani, Z E; Migliorati, S; Milner, R G; Mineeva, T; Mirazita, M; Mokeev, V; Molina, E; Camacho, C Munoz; Nadel-Turonski, P; Naidoo, P; Neupane, K; Niccolai, S; Nicol, M; Niculescu, G; Osipenko, M; Ouillon, M; Pandey, P; Paolone, M; Pappalardo, L L; Paremuzyan, R; Pasyuk, E; Paul, S J; Phelps, W; Pilleux, N; Pokhrel, M; Poudel, J; Price, J W; Prok, Y; Radic, A; Ramasubramanian, N; Raue, B A; Reed, Trevor; Richards, J; Ripani, M; Ritman, J; Rossi, P; Sabatié, F; Salgado, C; Schadmand, S; Schmidt, A; Scott, M B C; Sharabian, Y G; Shirokov, E V; Shrestha, U; Simmerling, P; Sparveris, N; Spreafico, M; Stepanyan, S; Strakovsky, I I; Strauch, S; Tan, J A; Trotta, N; Turisini, M; Tyson, R; Ungaro, M; Vallarino, S; Venturelli, L; Voskanyan, H; Voutier, E; Watts, D P; Wei, X; Williams, R; Wishart, R; Wood, M H; Zachariou, N; Zhang, J; Zhao, Z W; Ziegler, V; Zurek, M
03.1 Articolo su rivista
File in questo prodotto:
File Dimensione Formato  
2023_PRL.130.211902_chistiansen.pdf

accesso aperto

Tipologia: Full text (versione editoriale)
Licenza: Creative commons
Dimensione 421.44 kB
Formato Adobe PDF
Visualizza/Apri
421.44 kB Adobe PDF Visualizza/Apri

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2522490
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 4
social impact