Measurement of Exclusive $\pi^0$ Electroproduction Structure Functions and their Relationship to transverse generalized parton distributions
- Bedlinskiy, I.
- Kubarovsky, V.
- Niccolai, S.
- Stoler, P.
- Adhikari, K. P.
- Aghasyan, M.
- Amaryan, M. J.
- Anghinolfi, M.
- Avakian, H.
- Baghdasaryan, H.
- Ball, J.
- Baltzell, N. A.
- Battaglieri, M.
- Bennett, R. P.
- Biselli, A. S.
- Bookwalter, C.
- Boiarinov, S.
- Briscoe, W. J.
- Brooks, W. K.
- Burkert, V. D.
- Carman, D. S.
- Celentano, A.
- Chandavar, S.
- Charles, G.
- Contalbrigo, M.
- Crede, V.
- D'Angelo, A.
- Daniel, A.
- Dashyan, N.
- De Vita, R.
- De Sanctis, E.
- Deur, A.
- Djalali, C.
- Doughty, D.
- Dupre, R.
- Egiyan, H.
- Alaoui, A. El
- Fassi, L. El
- Elouadrhiri, L.
- Eugenio, P.
- Fedotov, G.
- Fegan, S.
- Fleming, J. A.
- Forest, T. A.
- Garçon, M.
- Gevorgyan, N.
- Giovanetti, K. L.
- Girod, F. X.
- Gohn, W.
- Gothe, R. W.
- Graham, L.
- Griffioen, K. A.
- Guegan, B.
- Guidal, M.
- Guo, L.
- Hafidi, K.
- Hakobyan, H.
- Hanretty, C.
- Heddle, D.
- Hicks, K.
- Holtrop, M.
- Ilieva, Y.
- Ireland, D. G.
- Ishkhanov, B. S.
- Isupov, E. L.
- Jo, H. S.
- Joo, K.
- Keller, D.
- Khandaker, M.
- Khetarpal, P.
- Kim, A.
- Kim, W.
- Klein, F. J.
- Koirala, S.
- Kubarovsky, A.
- Kuhn, S. E.
- Kuleshov, S. V.
- Kvaltine, N. D.
- Livingston, K.
- Lu, H. Y.
- MacGregor, I. J. D.
- Mao, Y.
- Markov, N.
- Martinez, David
- Mayer, M.
- Mckinnon, B.
- Meyer, C. A.
- Mineeva, T.
- Mirazita, M.
- Mokeev, V.
- Moutarde, H.
- Munevar, E.
- Muñoz Camacho, C.
- Nadel-Turonski, P.
- Niculescu, G.
- Niculescu, I.
- Osipenko, M.
- Ostrovidov, A. I.
- Pappalardo, L. L.
- Paremuzyan, R.
- Park, K.
- Park, S.
- Pasyuk, E.
- Pereira, S. Anefalos
- Phelps, E.
- Pisano, S.
- Pogorelko, O.
- Pozdniakov, S.
- Price, J. W.
- Procureur, S.
- Prok, Y.
- Protopopescu, D.
- Puckett, A. J. R.
- Raue, B. A.
- Ricco, G.
- Rimal, D.
- Ripani, M.
- Rosner, G.
- Rossi, P.
- Sabatié, F.
- Saini, M. S.
- Salgado, C.
- Saylor, N.
- Schott, D.
- Schumacher, R. A.
- Seder, E.
- Seraydaryan, H.
- Sharabian, Y. G.
- Smith, G. D.
- Sober, D. I.
- Sokhan, D.
- Stepanyan, S. S.
- Stepanyan, S.
- Strauch, S.
- Taiuti, M.
- Tang, W.
- Taylor, C. E.
- Tian, Ye
- Tkachenko, S.
- Ungaro, M.
- Vineyard, M. F.
- Vlassov, A.
- Voskanyan, H.
- Voutier, E.
- Walford, N. K.
- Watts, D. P.
- Weinstein, L. B.
- Weygand, D. P.
- Wood, M. H.
- Zachariou, N.
- Zhang, J.
- Zhao, Z. W.
- Zonta, I.
DOIAbstract
6 pages, 2 figuresExclusive $\pi^0$ electroproduction at a beam energy of 5.75 GeV has been measured with the Jefferson Lab CLAS spectrometer. Differential cross sections were measured at more than 1800 kinematic values in $Q^2$, $x_B$, $t$, and $\phi_\pi$, in the $Q^2$ range from 1.0 to 4.6 GeV$^2$,\ $-t$ up to 2 GeV$^2$, and $x_B$ from 0.1 to 0.58. Structure functions $\sigma_T +\epsilon \sigma_L, \sigma_{TT}$ and $\sigma_{LT}$ were extracted as functions of $t$ for each of 17 combinations of $Q^2$ and $x_B$. The data were compared directly with two handbag-based calculations including both longitudinal and transversity GPDs. Inclusion of only longitudinal GPDs very strongly underestimates $\sigma_T +\epsilon \sigma_L$ and fails to accoun...
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