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Kim, A; Joo, K; Amaryan, M; Atac, H; Ayerbe Gayoso, C; Baltzell, N A; Benmokhtar, F; Biselli, A S; Bondi, M; Boiarinov, S; Brinkmann, K-T; Brooks, W; Bulumulla, D; Burkert, V D; Carman, D S; Carvajal, J C; Celentano, A; Chatagnon, P; Chetry, T; Ciullo, G; Clary, B A; Cole, P L; Costantini, G; Crede, V; Dashyan, N; De Vita, R; Deur, A; Dilks, C; Djalali, C; Dugger, M; Dupre, R; Ehrhart, M; El Alaoui, A; Elouadrhiri, L; Filippi, A; Forest, T; Gilfoyle, G P; Girod, F X; Glazier, D I; Golubenko, A A; Gotra, Y; Guidal, M; Hafidi, K; Hattawy, M; Hauenstein, F; Hayward, T B; Hobart, A; Holtrop, M; Ireland, D G; Isupov, E L; Jo, H S; Joosten, S; Keller, D; Khachatryan, M; Khanal, A; Kim, W; Kripko, A; Lee, S; Livingston, K; Marchand, D; Marsicano, L; McKinnon, B; Milner, R G; Mineeva, T; Mirazita, M; Mokeev, V; Munoz Camacho, C; Naidoo, P; Nanda, S; Neupane, K; O'Connell, T R; Osipenko, M; Paolone, M; Pappalardo, L L; Paremuzyan, R; Pasyuk, E; Pogorelko, O; Prok, Y; Prokudin, A; Ritman, J; Roberts, C D; Rossi, P; Rowley, J; Segarra, E P; Sharabian, Y G; Shrestha, U; Simmerling, P; Soto, O; Stoler, P; Strakovsky, I I; Strauch, S; Tezgin, K; Thornton, A; Tyson, R; Venturelli, L; Voskanyan, H; Wei, X; Xu, S-S; Zachariou, N; Zhang, J
Physical review letters, 02/2022, Volume: 128, Issue: 6Journal Article
High precision measurements of the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering (SIDIS) from the proton have been performed using a 10.6 GeV incident electron beam and the CLAS12 spectrometer at Jefferson Lab. We report here a high precision multidimensional study of single π^{+} SIDIS data over a large kinematic range in Bjorken x, fractional energy, and transverse momentum of the hadron as well as photon virtualities Q^{2} ranging from 1-7 GeV^{2}. In particular, the structure function ratio F_{LU}^{sinϕ}/F_{UU} has been determined, where F_{LU}^{sinϕ} is a twist-3 quantity that can reveal novel aspects of emergent hadron mass and quark-gluon correlations within the nucleon. The data's impact on the evolving understanding of the underlying reaction mechanisms and their kinematic variation is explored using theoretical models for the different contributing transverse momentum dependent parton distribution functions.
