Measurements of ep→e′π+π−p′ cross sections with CLAS at 1.40 GeV < W < 2.0 GeV and 2.0 GeV2 < Q2 < 5.0 GeV2
- Isupov, E. L.
- Burkert, V. D.
- Carman, D. S.
- Gothe, R. W.
- Hicks, K.
- Ishkhanov, B. S.
- Mokeev, V. I.
- Adhikari, K. P.
- Adhikari, S.
- Adikaram, D.
- Akbar, Z.
- Amaryan, M. J.
- Anefalos Pereira, S.
- Avakian, H.
- Ball, J.
- Baltzell, N. A.
- Battaglieri, M.
- Batourine, V.
- Bedlinskiy, I.
- Biselli, A. S.
- Briscoe, W. J.
- Brooks, W. K.
- Bültmann, S.
- Cao, T.
- Celentano, A.
- Charles, G.
- Chetry, T.
- Ciullo, G.
- Clark, L.
- Colaneri, L.
- Cole, P. L.
- Contalbrigo, M.
- Cortes, O.
- Crede, V.
- D'Angelo, A.
- Dashyan, N.
- De Vita, R.
- De Sanctis, E.
- Deur, A.
- Djalali, C.
- Dupre, R.
- El Alaoui, A.
- El Fassi, L.
- Elouadrhiri, L.
- Eugenio, P.
- Fedotov, G.
- Fersch, R.
- Filippi, A.
- Fleming, J. A.
- Forest, T. A.
- Garçon, M.
- Gavalian, G.
- Ghandilyan, Y.
- Gilfoyle, G. P.
- Giovanetti, K. L.
- Girod, F. X.
- Glazier, D. I.
- Gleason, C.
- Golovatch, E.
- Griffioen, K. A.
- Guidal, M.
- Guo, L.
- Hafidi, K.
- Hakobyan, H.
- Hanretty, C.
- Harrison, N.
- Hattawy, M.
- Heddle, D.
- Holtrop, M.
- Hughes, S. M.
- Ilieva, Y.
- Ireland, D. G.
- Jenkins, D.
- Jiang, H.
- Joo, K.
- Joosten, S.
- Keller, D.
- Khachatryan, G.
- Khandaker, M.
- Kim, A.
- Kim, W.
- Klein, A.
- Klein, F. J.
- Kubarovsky, V.
- Kuleshov, S. V.
- Kunkel, M.
- Lanza, L.
- Lenisa, P.
- Livingston, K.
- Lu, H. Y.
- MacGregor, I. J. D.
- Markov, N.
- McKinnon, B.
- Mineeva, T.
- Mirazita, M.
- Montgomery, R. A.
- Movsisyan, A.
- Munevar, E.
- Munoz Camacho, C.
- Murdoch, G.
- Nadel-Turonski, P.
- Niccolai, S.
- Niculescu, G.
- Niculescu, I.
- Osipenko, M.
- Paolone, M.
- Paremuzyan, R.
- Park, K.
- Pasyuk, E.
- Phelps, W.
- Pogorelko, O.
- Price, J. W.
- Procureur, S.
- Prok, Y.
- Protopopescu, D.
- Raue, B. A.
- Ripani, M.
- Riser, D.
- Ritchie, B. G.
- Rizzo, A.
- Sabatié, F.
- Salgado, C.
- Schumacher, R. A.
- Sharabian, Y. G.
- Simonyan, A.
- Skorodumina, Iu.
- Smith, G. D.
- Sokhan, D.
- Sparveris, N.
- Stankovic, I.
- Strakovsky, I. I.
- Strauch, S.
- Taiuti, M.
- Tian, Ye
- Torayev, B.
- Trivedi, A.
- Ungaro, M.
- Voskanyan, H.
- Voutier, E.
- Walford, N. K.
- Wei, X.
- Wood, M. H.
- Zachariou, N.
- Zhang, J.
DOIAbstract
This paper reports new exclusive cross sections for ep → ep π+π−p' using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photon virtualities 2.0 GeV2 < Q2 < 5.0 GeV2 in the center-of-mass energy range 1.4 GeV <W< 2.0 GeV, which covers a large part of the nucleon resonance region. Using a model developed for the phenomenological analysis of electroproduction data, we see strong indications that the relative contributions from the resonant cross sections at W < 1.74 GeV increase with Q2. These data considerably extend the kinematic reach of previous measurements. Exclusive ep → ep π+π−p' cross section measurements are of particular importance for the extraction of resonance e...
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