This paper reports new exclusive cross sections for ep -> e' pi(+) pi(-) p' using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photon virtualities 2.0 GeV2 < Q(2) < 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 Q(2). These data considerably extend the kinematic reach of previous measurements. Exclusive ep -> e' pi(+) pi(-) p' cross section measurements are of particular importance for the extraction of resonance electrocouplings in the mass range above 1.6 GeV.

Isupov, E.l., Burkert, V.d., Carman, D.s., Gothe, R.w., Hicks, K., Ishkhanov, B.s., et al. (2017). 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. PHYSICAL REVIEW C, 96(2), 025209-1-025209-19 [10.1103/PhysRevC.96.025209].

Measurements of ep→e′π+π-p′ cross sections with CLAS at 1.40 GeV
Colaneri L.;D'Angelo A.
Membro del Collaboration Group
;
Lanza L.;Rizzo A.;
2017-08-24

Abstract

This paper reports new exclusive cross sections for ep -> e' pi(+) pi(-) p' using the CLAS detector at Jefferson Laboratory. These results are presented for the first time at photon virtualities 2.0 GeV2 < Q(2) < 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 Q(2). These data considerably extend the kinematic reach of previous measurements. Exclusive ep -> e' pi(+) pi(-) p' cross section measurements are of particular importance for the extraction of resonance electrocouplings in the mass range above 1.6 GeV.

24-ago-2017
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
English
Con Impact Factor ISI
CLAS Collaboration
https://journals.aps.org/prc/pdf/10.1103/PhysRevC.96.025209
Isupov, E.l., Burkert, V.d., Carman, D.s., Gothe, R.w., Hicks, K., Ishkhanov, B.s., et al. (2017). 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. PHYSICAL REVIEW C, 96(2), 025209-1-025209-19 [10.1103/PhysRevC.96.025209].
Isupov, El; Burkert, Vd; Carman, Ds; Gothe, Rw; Hicks, K; Ishkhanov, Bs; Mokeev, Vi; Adhikari, Kp; Adhikari, S; Adikaram, D; Akbar, Z; Amaryan, Mj; Anefalos Pereira, S; Avakian, H; Ball, J; Baltzell, Na; Battaglieri, M; Batourine, V; Bedlinskiy, I; Biselli, As; Briscoe, Wj; Brooks, Wk; Bultmann, S; Cao, T; Celentano, A; Charles, G; Chetry, T; Ciullo, G; Clark, L; Colaneri, L; Cole, Pl; 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, Ja; Forest, Ta; Garcon, M; Gavalian, G; Ghandilyan, Y; Gilfoyle, Gp; Giovanetti, Kl; Girod, Fx; Glazier, Di; Gleason, C; Golovatch, E; Griffioen, Ka; Guidal, M; Guo, L; Hafidi, K; Hakobyan, H; Hanretty, C; Harrison, N; Hattawy, M; Heddle, D; Holtrop, M; Hughes, Sm; Ilieva, Y; Ireland, Dg; Jenkins, D; Jiang, H; Joo, K; Joosten, S; Keller, D; Khachatryan, G; Khandaker, M; Kim, A; Kim, W; Klein, A; Klein, Fj; Kubarovsky, V; Kuleshov, Sv; Kunkel, M; Lanza, L; Lenisa, P; Livingston, K; Lu, Hy; Macgregor, Ijd; Markov, N; Mckinnon, B; Mineeva, T; Mirazita, M; Montgomery, Ra; 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, Jw; Procureur, S; Prok, Y; Protopopescu, D; Raue, Ba; Ripani, M; Riser, D; Ritchie, Bg; Rizzo, A; Sabatie, F; Salgado, C; Schumacher, Ra; Sharabian, Yg; Simonyan, A; Skorodumina, I; Smith, Gd; Sokhan, D; Sparveris, N; Stankovic, I; Strakovsky, Ii; Strauch, S; Taiuti, M; Tian, Y; Torayev, B; Trivedi, A; Ungaro, M; Voskanyan, H; Voutier, E; Walford, Nk; Wei, X; Wood, Mh; Zachariou, N; Zhang, J
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/194453
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