期刊
PHYSICAL REVIEW C
卷 96, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.96.025209
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资金
- US Department of Energy (DOE)
- National Science Foundation (NSF)
- Chilean Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
- Italian Istituto Nazionale di FisicaNucleare (INFN)
- French Centre National de la Recherche Scientifique (CNRS)
- French Commissariat a l'Energie Atomique (CEA)
- Skobeltsyn Institute of Nuclear Physics (SINP)
- Physics Departments at Moscow State University (MSU, Moscow)
- Ohio University (OU)
- Scottish Universities Physics Alliance (SUPA)
- National Research Foundation of Korea (NRF)
- UK Science and Technology Facilities Council (STFC)
- US Department of Energy [DE-AC05-06OR23177]
- STFC [ST/P004458/1, ST/L005719/1, ST/J000175/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1306737, 1505615] Funding Source: National Science Foundation
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.
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