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Keller, D. Martinez, D. Protopopescu, D. P. Weygand, D. Rimal, D. S. Carman, D. Schott, D. Sokhan, E. De Sanctis, E. Golovatch, E. L. Isupov, E. Munevar, E. Pasyuk, E. Phelps, E. Seder, E. Voutier, F. J. Klein, F. Sabati\\'e, F. X. Girod, G. Charles, G. D. Smith, G. Fedotov, G. Niculescu, G. P. Gilfoyle, G. Ricco, G. Rosner, H. Avakian, H. Baghdasaryan, H. Egiyan, H. Hakobyan, H. Moutarde, H. Seraydaryan, H. S. Jo, H. Voskanyan, H. Y. Lu, I. Bedlinskiy, I. G. Aznauryan, I. I. Strakovsky, I. J. D. MacGregor, I. Niculescu, I. Zonta, J. A. Fleming, J. Ball, J. Bono, J. J. Phillips, J. T. Goetz, J. W. Price, J. Zhang, K. A. Griffioen, K. Hafidi, K. Hicks, K. Joo, K. L. Giovanetti, K. Livingston, K. P. Adhikari, K. Park, L. B. Weinstein, L. El Fassi, L. Guo, L. L. Pappalardo, M. Aghasyan, M. Anghinolfi, M. Battaglieri, M. Contalbrigo, M. D. Anderson, M. Dugger, M. Gar\\c{c}on, M. Guidal, M. Holtrop, M. H. Wood, M. J. Amaryan, M. Khandaker, M. Mayer, M. Mirazita, M. Osipenko, M. Ripani, M. 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Zhao","submitted_at":"2012-11-27T21:50:54Z","abstract_excerpt":"We report the measurement of near threshold neutral pion electroproduction cross sections and the extraction of the associated structure functions on the proton in the kinematic range $Q^2$ from 2 to 4.5 GeV$^2$ and $W$ from 1.08 to 1.16 GeV. These measurements allow us to access the dominant pion-nucleon s-wave multipoles $E_{0+}$ and $S_{0+}$ in the near-threshold region. In the light-cone sum-rule framework (LCSR), these multipoles are related to the generalized form factors $G_1^{\\pi^0 p}(Q^2)$ and $G_2^{\\pi^0 p}(Q^2)$. 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