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Title: The Nucleon Resonance Structure from the $$\pi^+\pi^-p$$ Electroproduction Reaction off Protons

Abstract

The results on the photo- and electroexcitation amplitudes of most nucleon resonances in the mass range up to 2.0 GeV determined from the CLAS experimental data on exclusive $$\pi^+\pi^-p$$ photo-/electroproduction off protons in collaboration between the Jefferson Lab and Moscow State University are presented. The first and only available results on electroexcitation amplitudes from CLAS in a wide range of photon virtualities $Q^2$ $<$ 5.0 GeV$^2$ revealed the nucleon resonance structure as a complex interplay between the inner core of three dressed quarks and external meson-baryon cloud. These results shed light on the strong QCD dynamics which underlines the generation of excited nucleon states of different structural features from confined quarks and gluons. Lastly, the future prospects of these studies in the new era of experiments with the CLAS12 detector, which started successfully in Spring of 2018, are outlined.

Authors:
 [1];  [1];  [2]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. Moscow State Univ., Moscow (Russia)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1556098
Report Number(s):
JLAB-PHY-19-2852; DOE/OR/23177-4627; arXiv:1901.09709
Journal ID: ISSN 0027-1349
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Moscow University Physics Bulletin
Additional Journal Information:
Journal Volume: 74; Journal Issue: 3; Journal ID: ISSN 0027-1349
Publisher:
Pleiades Publishing
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; excited nucleon state structure; photo- and electroexcitation amplitudes; strong QCD

Citation Formats

Burkert, V. D., Mokeev, V. I., and Ishkhanov, B. S. The Nucleon Resonance Structure from the $\pi^+\pi^-p$ Electroproduction Reaction off Protons. United States: N. p., 2019. Web. doi:10.3103/S0027134919030032.
Burkert, V. D., Mokeev, V. I., & Ishkhanov, B. S. The Nucleon Resonance Structure from the $\pi^+\pi^-p$ Electroproduction Reaction off Protons. United States. doi:10.3103/S0027134919030032.
Burkert, V. D., Mokeev, V. I., and Ishkhanov, B. S. Tue . "The Nucleon Resonance Structure from the $\pi^+\pi^-p$ Electroproduction Reaction off Protons". United States. doi:10.3103/S0027134919030032.
@article{osti_1556098,
title = {The Nucleon Resonance Structure from the $\pi^+\pi^-p$ Electroproduction Reaction off Protons},
author = {Burkert, V. D. and Mokeev, V. I. and Ishkhanov, B. S.},
abstractNote = {The results on the photo- and electroexcitation amplitudes of most nucleon resonances in the mass range up to 2.0 GeV determined from the CLAS experimental data on exclusive $\pi^+\pi^-p$ photo-/electroproduction off protons in collaboration between the Jefferson Lab and Moscow State University are presented. The first and only available results on electroexcitation amplitudes from CLAS in a wide range of photon virtualities $Q^2$ $<$ 5.0 GeV$^2$ revealed the nucleon resonance structure as a complex interplay between the inner core of three dressed quarks and external meson-baryon cloud. These results shed light on the strong QCD dynamics which underlines the generation of excited nucleon states of different structural features from confined quarks and gluons. Lastly, the future prospects of these studies in the new era of experiments with the CLAS12 detector, which started successfully in Spring of 2018, are outlined.},
doi = {10.3103/S0027134919030032},
journal = {Moscow University Physics Bulletin},
number = 3,
volume = 74,
place = {United States},
year = {2019},
month = {8}
}

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Works referenced in this record:

Electroproduction of the Roper resonance on the proton: The role of the three-quark core and the molecular N σ component
journal, July 2011


Electroexcitation of nucleon resonances of the [ 70 , 1 ] multiplet in a light-front relativistic quark model
journal, June 2017


Natural constraints on the gluon-quark vertex
journal, February 2017


Electroproduction of p π + π off protons at 0 . 2 < Q 2 < 0 . 6 GeV 2 and 1 . 3 < W < 1 . 57 GeV with the CLAS detector
journal, January 2009


Perspective on the Origin of Hadron Masses
journal, December 2016


Model analysis of the ep e ' p π + π electroproduction reaction on the proton
journal, October 2009


π + photoproduction on the proton for photon energies from 0.725 to 2.875 GeV
journal, June 2009


Structure of the nucleon’s low-lying excitations
journal, February 2018


Nucleon Resonance Electrocouplings from Light-Front Quark Models at $${\varvec{Q}}^2 $$ Q 2 up to 12 $$\hbox {GeV}^2$$ GeV 2
journal, August 2016


Completing the Picture of the Roper Resonance
journal, October 2015


Isospin decomposition of γ N N * transitions within a dynamical coupled-channels model
journal, July 2016


Recent results on the nucleon resonance spectrum and structure from the CLAS detector
journal, January 2016


Electroexcitation of nucleon resonances
journal, January 2012


First results on nucleon resonance photocouplings from the γp → π+π−p reaction
journal, January 2019


Measurements of e p e π + π p cross sections with CLAS at 1.40 GeV < W < 2.0 GeV and 2.0 GeV 2 < Q 2 < 5.0 GeV 2
journal, August 2017


Measurements of the γ v p p π + π cross section with the CLAS detector for 0.4 GeV 2 < Q 2 < 1.0 GeV 2 and 1.3 GeV < W < 1.825 GeV
journal, August 2018


Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
journal, June 2013

  • Aznauryan, I. G.; Bashir, A.; Braun, V. M.
  • International Journal of Modern Physics E, Vol. 22, Issue 06
  • DOI: 10.1142/S0218301313300154

Jefferson Lab at 12 GeV: The Science Program
journal, October 2018


$$N^*$$ N ∗ form Factors Based on a Covariant Quark Model
journal, June 2018


Extraction of electromagnetic transition form factors for nucleon resonances within a dynamical coupled-channels model
journal, October 2010


Nucleon Resonance Structure from Exclusive Meson Electroproduction with CLAS
journal, April 2018


Experimental study of the P 11 ( 1440 ) and D 13 ( 1520 ) resonances from the CLAS data on e p e π + π p
journal, September 2012


Review of Particle Physics
journal, August 2018


Measurement of e p e p π + π and Baryon Resonance Analysis
journal, July 2003


Electromagnetic structure of nucleon and Roper in soft-wall AdS/QCD
journal, March 2018


High-statistics study of the reaction γp → p2π0
journal, August 2015


$$N^*$$ N ∗ Structure and Strong QCD
journal, May 2018


Nucleon and $${\Delta}$$ Δ Elastic and Transition Form Factors
journal, October 2014


Electroexcitation of nucleon resonances from CLAS data on single pion electroproduction
journal, November 2009


Developments of the Jülich–Bonn Dynamical Coupled-Channel Analysis
journal, October 2018