Measurements of $e p \to e' \pi^+ \pi^- p'$ Cross Sections with CLAS at $1.40$ Gev $< W < 2.0$ GeV and $2.0$ GeV$^2$ $< Q^2 < 5.0$ GeV$^2$
- Isupov, E.L.
- Burkert, V.D.
- Carman, D.S.
- Gothe, R.W.
- Hicks, K.
- Ishkhanov, B.S.
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- Elouadrhiri, L.
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- 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.
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- Ritchie, B.G.
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- 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
International audienceThis paper reports new exclusive cross sections for ep→e′π+π−p′ using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photon virtualities 2.0GeV2<Q2<5.0GeV2 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→e′π+π−p′ cross section measurements are of particular importance for the extraction of resonance electrocouplings...