Document Type
Article
Department/Program
Physics
Journal Title
PHYSICAL REVIEW C
Pub Date
8-24-2017
Volume
96
Issue
2
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.
Recommended Citation
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.; Pereira, S. Anefalos; Avakian, H.; Ball, J.; Baltzell, N. A.; Battaglieri, M.; Batourine, V.; Bedlinskiy, I.; Biselli, A. S.; Briscoe, W. J.; Brooks, W. K.; Bultmann, S.; Cao, T.; and Griffioen, Keith A., Measurements of ep -> e' pi(+) pi(-) p' cross sections with CLAS at 1.40 GeV < W < 2.0 GeV and 2.0GeV(2) < Q(2) < 5.0 GeV2 (2017). PHYSICAL REVIEW C, 96(2).
10.1103/PhysRevC.96.025209
DOI
10.1103/PhysRevC.96.025209
