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

Burkert, V. D.; Mokeev, V. I.; Ishkhanov, B. S.

doi:10.3103/S0027134919030032

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

Journal Article · Tue Aug 06 04:00:00 EDT 2019 · Moscow University Physics Bulletin

DOI:https://doi.org/10.3103/S0027134919030032· OSTI ID:1556098

Burkert, V. D. ^[1]; Mokeev, V. I. ^[1]; Ishkhanov, B. S. ^[2]

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Moscow State Univ., Moscow (Russia)

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.

View Accepted Manuscript (DOE)

Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC05-06OR23177

OSTI ID:: 1556098

Report Number(s):: JLAB-PHY--19-2852; DOE/OR/23177-4627; arXiv:1901.09709

Journal Information:: Moscow University Physics Bulletin, Journal Name: Moscow University Physics Bulletin Journal Issue: 3 Vol. 74; ISSN 0027-1349

Publisher:: Pleiades PublishingCopyright Statement

Country of Publication:: United States

Language:: English

References (34)

Nucleon and $${\Delta}$$ Δ Elastic and Transition Form Factors Segovia, Jorge; Cloët, Ian C.; Roberts, Craig D. Few-Body Systems, Vol. 55, Issue 12 https://doi.org/10.1007/s00601-014-0907-2	journal	October 2014
Nucleon Resonance Electrocouplings from Light-Front Quark Models at $${\varvec{Q}}^2 $$ Q 2 up to 12 $$\hbox {GeV}^2$$ GeV 2 Obukhovsky, Igor T.; Faessler, Amand; Gutsche, Thomas Few-Body Systems, Vol. 57, Issue 11 https://doi.org/10.1007/s00601-016-1141-x	journal	August 2016
Perspective on the Origin of Hadron Masses Roberts, Craig D. Few-Body Systems, Vol. 58, Issue 1 https://doi.org/10.1007/s00601-016-1168-z	journal	December 2016
Supersymmetric Properties of Hadron Physics from Light-Front Holography and Superconformal Algebra and other Advances in Light-Front QCD Brodsky, Stanley J. Few-Body Systems, Vol. 59, Issue 3 https://doi.org/10.1007/s00601-018-1342-6	journal	March 2018
Nucleon Resonance Structure from Exclusive Meson Electroproduction with CLAS Mokeev, Victor I. Few-Body Systems, Vol. 59, Issue 4 https://doi.org/10.1007/s00601-018-1369-8	journal	April 2018
$$N^*$$ N ∗ Structure and Strong QCD Roberts, Craig D. Few-Body Systems, Vol. 59, Issue 4 https://doi.org/10.1007/s00601-018-1385-8	journal	May 2018
$$N^*$$ N ∗ form Factors Based on a Covariant Quark Model Ramalho, G. Few-Body Systems, Vol. 59, Issue 5 https://doi.org/10.1007/s00601-018-1412-9	journal	June 2018
Developments of the Jülich–Bonn Dynamical Coupled-Channel Analysis Döring, M. Few-Body Systems, Vol. 59, Issue 6 https://doi.org/10.1007/s00601-018-1465-9	journal	October 2018
Measurement of New Observables from the $$\pi ^{+}\pi ^{-}p$$ π + π - p Electroproduction Off the Proton: Reaction: $$ep \rightarrow e'p'\pi ^{+}\pi ^{-}$$ e p → e ′ p ′ π + π - $$Q^{2}=[2.0, 5.0]$$ Q 2 = [ 2.0 , 5.0 ] GeV2 $$W=[1.400, 2.125]$$ W = [ 1.400 , 2.125 ] GeV Trivedi, Arjun Few-Body Systems, Vol. 60, Issue 1 https://doi.org/10.1007/s00601-018-1471-y	journal	November 2018
First results on nucleon resonance photocouplings from the γp → π+π−p reaction Golovatch, E.; Burkert, V. D.; Carman, D. S. Physics Letters B, Vol. 788 https://doi.org/10.1016/j.physletb.2018.10.013	journal	January 2019
Electroexcitation of nucleon resonances Aznauryan, I. G.; Burkert, V. D. Progress in Particle and Nuclear Physics, Vol. 67, Issue 1 https://doi.org/10.1016/j.ppnp.2011.08.001	journal	January 2012
Recent results on the nucleon resonance spectrum and structure from the CLAS detector Mokeev, V. I.; Aznauryan, I. G.; Burkert, V. D. EPJ Web of Conferences, Vol. 113 https://doi.org/10.1051/epjconf/201611301013	journal	January 2016
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 Fedotov, G. V.; Mokeev, V. I.; Burkert, V. D. Physical Review C, Vol. 79, Issue 1 https://doi.org/10.1103/PhysRevC.79.015204	journal	January 2009
π + photoproduction on the proton for photon energies from 0.725 to 2.875 GeV Dugger, M.; Ritchie, B. G.; Ball, J. P. Physical Review C, Vol. 79, Issue 6 https://doi.org/10.1103/PhysRevC.79.065206	journal	June 2009
Model analysis of the ep → e ' p π + π − electroproduction reaction on the proton Mokeev, V. I.; Burkert, V. D.; Lee, T. -S. H. Physical Review C, Vol. 80, Issue 4 https://doi.org/10.1103/PhysRevC.80.045212	journal	October 2009
Electroexcitation of nucleon resonances from CLAS data on single pion electroproduction Aznauryan, I. G.; Burkert, V. D.; Biselli, A. S. Physical Review C, Vol. 80, Issue 5 https://doi.org/10.1103/PhysRevC.80.055203	journal	November 2009
Extraction of electromagnetic transition form factors for nucleon resonances within a dynamical coupled-channels model Suzuki, N.; Sato, T.; Lee, T. -S. H. Physical Review C, Vol. 82, Issue 4 https://doi.org/10.1103/PhysRevC.82.045206	journal	October 2010
Nucleon electromagnetic form factors and electroexcitation of low-lying nucleon resonances in a light-front relativistic quark model Aznauryan, I. G.; Burkert, V. D. Physical Review C, Vol. 85, Issue 5 https://doi.org/10.1103/PhysRevC.85.055202	journal	May 2012
Experimental study of the P 11 ( 1440 ) and D 13 ( 1520 ) resonances from the CLAS data on e p → e ′ π + π − p ′ Mokeev, V. I.; Burkert, V. D.; Elouadrhiri, L. Physical Review C, Vol. 86, Issue 3 https://doi.org/10.1103/PhysRevC.86.035203	journal	September 2012
New results from the studies of the N ( 1440 ) 1 / 2 + , N ( 1520 ) 3 / 2 − , and Δ ( 1620 ) 1 / 2 − resonances in exclusive e p → e ′ p ′ π + π − electroproduction with the CLAS detector Mokeev, V. I.; Burkert, V. D.; Carman, D. S. Physical Review C, Vol. 93, Issue 2 https://doi.org/10.1103/PhysRevC.93.025206	journal	February 2016
Isospin decomposition of γ N → N * transitions within a dynamical coupled-channels model Kamano, H.; Nakamura, S. X.; Lee, T. -S. H. Physical Review C, Vol. 94, Issue 1 https://doi.org/10.1103/PhysRevC.94.015201	journal	July 2016
Electroexcitation of nucleon resonances of the [ 70 , 1 − ] multiplet in a light-front relativistic quark model Aznauryan, I. G.; Burkert, V. D. Physical Review C, Vol. 95, Issue 6 https://doi.org/10.1103/PhysRevC.95.065207	journal	June 2017
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 Isupov, E. L.; Burkert, V. D.; Carman, D. S. Physical Review C, Vol. 96, Issue 2 https://doi.org/10.1103/PhysRevC.96.025209	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 Fedotov, G. V.; Skorodumina, Iu. A.; Burkert, V. D. Physical Review C, Vol. 98, Issue 2 https://doi.org/10.1103/PhysRevC.98.025203	journal	August 2018
Electroproduction of the Roper resonance on the proton: The role of the three-quark core and the molecular N σ component Obukhovsky, Igor T.; Faessler, Amand; Fedorov, Dimitry K. Physical Review D, Vol. 84, Issue 1 https://doi.org/10.1103/PhysRevD.84.014004	journal	July 2011
Natural constraints on the gluon-quark vertex Binosi, Daniele; Chang, Lei; Papavassiliou, Joannis Physical Review D, Vol. 95, Issue 3 https://doi.org/10.1103/PhysRevD.95.031501	journal	February 2017
Structure of the nucleon’s low-lying excitations Chen, Chen; El-Bennich, Bruno; Roberts, Craig D. Physical Review D, Vol. 97, Issue 3 https://doi.org/10.1103/PhysRevD.97.034016	journal	February 2018
Electromagnetic structure of nucleon and Roper in soft-wall AdS/QCD Gutsche, Thomas; Lyubovitskij, Valery E.; Schmidt, Ivan Physical Review D, Vol. 97, Issue 5 https://doi.org/10.1103/PhysRevD.97.054011	journal	March 2018
Review of Particle Physics Tanabashi, M.; Hagiwara, K.; Hikasa, K. Physical Review D, Vol. 98, Issue 3 https://doi.org/10.1103/PhysRevD.98.030001	journal	August 2018
Completing the Picture of the Roper Resonance Segovia, Jorge; El-Bennich, Bruno; Rojas, Eduardo Physical Review Letters, Vol. 115, Issue 17 https://doi.org/10.1103/PhysRevLett.115.171801	journal	October 2015
Measurement of e p → e ′ p π + π − and Baryon Resonance Analysis Ripani, M.; Burkert, V. D.; Mokeev, V. Physical Review Letters, Vol. 91, Issue 2 https://doi.org/10.1103/PhysRevLett.91.022002	journal	July 2003
High-statistics study of the reaction γp → p2π0 Sokhoyan, V.; Gutz, E.; Crede, V. The European Physical Journal A, Vol. 51, Issue 8 https://doi.org/10.1140/epja/i2015-15095-x	journal	August 2015
Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction Aznauryan, I. G.; Bashir, A.; Braun, V. M. International Journal of Modern Physics E, Vol. 22, Issue 06 https://doi.org/10.1142/S0218301313300154	journal	June 2013
Jefferson Lab at 12 GeV: The Science Program Burkert, Volker D. Annual Review of Nuclear and Particle Science, Vol. 68, Issue 1 https://doi.org/10.1146/annurev-nucl-101917-021129	journal	October 2018