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Title: New results from the studies of the Ν (1440) 1/2+, Ν (1520) 3/2, and Δ (1620) 1/2 resonances in exclusive ep → e'p'π+π electroproduction with the CLAS detector

In this study, the transition helicity amplitudes from the proton ground state to the N(1440)1/2+, N(1520)3/2, and Δ(1620)1/2 resonances (γvpN* electrocouplings) were determined from the analysis of nine independent onefold differential π+πp electroproduction cross sections off a proton target, taken with CLAS at photon virtualities 0.5GeV2 < Q2 < 1.5 GeV2. The phenomenological reaction model employed for separation of the resonant and nonresonant contributions to this exclusive channel was further developed.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [4] ;  [4] ;  [3]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Moscow State Univ., Moscow (Russia)
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Univ. of South Carolina, Columbia, SC (United States); Moscow State Univ., Moscow (Russia)
  4. Moscow State Univ., Moscow (Russia)
  5. Univ. of South Carolina, Columbia, SC (United States)
  6. Ohio Univ., Athens, OH (United States)
Publication Date:
OSTI Identifier:
1239646
Report Number(s):
JLAB-PHY--15-2137; DOE/OR/23177--3552; arXiv:1509.05460
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:
AC05-060R23177
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 93; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
APS
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS