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@ARTICLE{Kunkel:850776,
      author       = {Kunkel, Michael C. and Amaryan, M. J. and Strakovsky, I. I.
                      and Ritman, J. and Goldstein, G. R. and Adhikari, K. P. and
                      Adhikari, S. and Avakian, H. and Ball, J. and Balossino, I.
                      and Barion, L. and Battaglieri, M. and Batourine, V. and
                      Bedlinskiy, I. and Biselli, A. S. and Boiarinov, S. and
                      Briscoe, W. J. and Brooks, W. K. and Bültmann, S. and
                      Burkert, V. D. and Cao, F. and Carman, D. S. and Celentano,
                      A. and Charles, G. and Chetry, T. and Ciullo, G. and Clark,
                      L. and Cole, P. L. and Contalbrigo, M. and Cortes, O. and
                      Crede, V. and D'Angelo, A. and Dashyan, N. and De Vita, R.
                      and De Sanctis, E. and Degtyarenko, P. V. and Defurne, M.
                      and Deur, A. and Djalali, C. and Dugger, M. and Dupre, R.
                      and Egiyan, H. and El Alaoui, A. and El Fassi, L. and
                      Elouadrhiri, L. and Eugenio, P. and Fedotov, G. and Fersch,
                      R. and Filippi, A. and Fradi, A. and Gavalian, G. and
                      Ghandilyan, Y. and Ghosh, S. and Gilfoyle, G. P. and
                      Giovanetti, K. L. and Girod, F. X. and Glazier, D. I. and
                      Gohn, W. and Golovatch, E. and Gothe, R. W. and Griffioen,
                      K. A. and Guo, L. and Guidal, M. and Hafidi, K. and
                      Hakobyan, H. and Harrison, N. and Hattawy, M. and Hicks, K.
                      and Holtrop, M. and Hyde, C. E. and Ireland, D. G. and
                      Ishkhanov, B. S. and Isupov, E. L. and Jenkins, D. and Joo,
                      K. and Kabir, M. L. and Keller, D. and Khachatryan, G. and
                      Khachatryan, M. and Khandaker, M. and Kim, A. and Kim, W.
                      and Klein, A. and Klein, F. and Kubarovsky, V. and Kuhn, S.
                      E. and Laget, J. M. and Lanza, L. and Lenisa, P. and Lersch,
                      D. and Livingston, K. and MacGregor, I. J. D. and Markov, N.
                      and Mbianda Njencheu, G. and McKinnon, B. and Mineeva, T.
                      and Mokeev, V. and Montgomery, R. A. and Movsisyan, A. and
                      Munoz Camacho, C. and Nadel-Turonski, P. and Niccolai, S.
                      and Niculescu, G. and Osipenko, M. and Ostrovidov, A. I. and
                      Paolone, M. and Park, K. and Pasyuk, E. and Payette, D. and
                      Phelps, W. and Pogorelko, O. and Poudel, J. and Price, J. W.
                      and Procureur, S. and Prok, Y. and Protopopescu, D. and
                      Ripani, M. and Ritchie, B. G. and Rizzo, A. and Rosner, G.
                      and Roy, A. and Sabatié, F. and Salgado, C. and Schadmand,
                      S. and Schumacher, R. A. and Sharabian, Y. G. and
                      Skorodumina, Iu. and Stepanyan, S. and Ireland, D. G. and
                      Sokhan, D. and Sober, D. I. and Sparveris, N. and Strauch,
                      S. and Taiuti, M. and Tan, J. A. and Ungaro, M. and
                      Voskanyan, H. and Voutier, E. and Watts, D. P. and
                      Weinstein, L. and Wei, X. and Weygand, D. P. and Zachariou,
                      N. and Zhang, J. and Zhao, Z. W.},
      title        = {{E}xclusive photoproduction of π 0 up to large values of
                      {M}andelstam variables s , t , and u with {CLAS}},
      journal      = {Physical review / C},
      volume       = {98},
      number       = {1},
      issn         = {2469-9985},
      address      = {Woodbury, NY},
      publisher    = {Inst.},
      reportid     = {FZJ-2018-04550},
      pages        = {015207},
      year         = {2018},
      abstract     = {Exclusive photoproduction cross sections have been measured
                      for the process γp→pπ0[e+e−(γ)] with the Dalitz decay
                      final state using tagged photon energies in the range of
                      Eγ=1.275–5.425 GeV. The complete angular distribution of
                      the final state π0, for the entire photon energy range up
                      to large values of t and u, has been measured for the first
                      time. The data obtained show that the cross section dσ/dt,
                      at mid to large angles, decreases with energy as
                      s−6.89±0.26. This is in agreement with the perturbative
                      QCD quark counting rule prediction of s−7. Paradoxically,
                      the size of angular distribution of measured cross sections
                      is greatly underestimated by the QCD-based generalized
                      parton distribution mechanism at highest available invariant
                      energy s=11GeV2. At the same time, the Regge-exchange-based
                      models for π0 photoproduction are more consistent with
                      experimental data.},
      cin          = {IKP-1},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IKP-1-20111104},
      pnm          = {6G12 - FAIR (POF3-624)},
      pid          = {G:(DE-HGF)POF3-6G12},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000439733000007},
      doi          = {10.1103/PhysRevC.98.015207},
      url          = {https://juser.fz-juelich.de/record/850776},
}