Electroproduction of p pi(+)pi(-) off protons at 0.2 < Q(2) < 0.6 GeV2 and 1.3 < W < 1.57 GeV with the CLAS detector
G. V. Fedotov,Victor Mokeev,Victor Mokeev,Volker D. Burkert,Latifa Elouadrhiri,E. Golovatch,B. S. Ishkhanov,E. L. Isupov,Nikolay Shvedunov,G. S. Adams,M. J. Amaryan,P. Ambrozewicz,M. Anghinolfi,B. Asavapibhop,G. Asryan,H. Avakian,Hovhannes Baghdasaryan,N. Baillie,J. P. Ball,N. A. Baltzell,V. Batourine,M. Battaglieri,I. Bedlinskiy,M. Bektasoglu,M. Bellis,M. Bellis,N. Benmouna,A. S. Biselli,B. E. Bonner,Sylvain Bouchigny,S. Boiarinov,R. Bradford,D. Branford,William Brooks,S. Bültmann,C. Butuceanu,J. R. Calarco,S. L. Careccia,D. S. Carman,B. Carnahan,Shifeng Chen,P. L. Cole,P. L. Cole,P. Coltharp,P. Coltharp,P. Corvisiero,D. G. Crabb,Hall Crannell,V. Crede,J. P. Cummings,N. Dashyan,E. De Sanctis,R. De Vita,P. V. Degtyarenko,H. Denizli,L. C. Dennis,K. V. Dharmawardane,R. Dickson,C. Djalali,G. E. Dodge,J. Donnelly,D. Doughty,D. Doughty,Michael Dugger,S. A. Dytman,O. P. Dzyubak,H. Egiyan,K. S. Egiyan,P. Eugenio,R. Fatemi,R. J. Feuerbach,T. A. Forest,H. O. Funsten,G. Gavalian,N. Gevorgyan,Gerard Gilfoyle,K. L. Giovanetti,F. X. Girod,J. T. Goetz,R. W. Gothe,K. A. Griffioen,M. Guidal,M. Guillo,N. Guler,L. Guo,V. Gyurjyan,Cynthia Marie Hadjidakis,J. Hardie,J. Hardie,N. Hassall,F. W. Hersman,K. Hicks,I. Hleiqawi,M. Holtrop,J. Hu,Marco A. Huertas,C. E. Hyde,Y. Ilieva,D. G. Ireland,M. M. Ito,D. G. Jenkins,H. S. Jo,K. Joo,K. Joo,H. G. Juengst,J. D. Kellie,M. Khandaker,K. Y. Kim,Kwangsoo Kim,W. Kim,W. Kim,Avraham Klein,Avraham Klein,Friedrich Klein,Alexei V. Klimenko,M. Klusman,Z. Krahn,Laird Kramer,Laird Kramer,V. P. Kubarovsky,J. Kuhn,S. E. Kuhn,Sergey Kuleshov,J. Lachniet,J. M. Laget,J. M. Laget,J. Langheinrich,D. Lawrence,T. Lee,K. Livingston,N. Markov,M. E. McCracken,B. McKinnon,J. W C McNabb,B. A. Mecking,M. D. Mestayer,C. A. Meyer,Tsutomu Mibe,K. Mikhailov,T. Mineeva,R. C. Minehart,M. Mirazita,R. A. Miskimen,Kei Moriya,S. A. Morrow,James Mueller,G. S. Mutchler,P. Nadel-Turonski,Rakhsha Nasseripour,S. Niccolai,G. Niculescu,G. Niculescu,I. Niculescu,I. Niculescu,B. B. Niczyporuk,R. A. Niyazov,R. A. Niyazov,G. V. O'Rielly,M. Osipenko,A. I. Ostrovidov,K. Park,E. Pasyuk,C. Paterson,J. Pierce,N. Pivnyuk,Dinko Pocanic,O. Pogorelko,S. Pozdniakov,J. W. Price,Y. Prok,D. Protopopescu,Brian Raue,Brian Raue,G. Ricco,M. Ripani,Barry Ritchie,G. Rosner,P. Rossi,D. Rowntree,P. D. Rubin,F. Sabatié,C. Salgado,J. P. Santoro,J. P. Santoro,V. Sapunenko,R. A. Schumacher,V. S. Serov,Y. G. Sharabian,D. Sharov,J. Shaw,Elton Smith,L. C. Smith,D. I. Sober,A.V. Stavinsky,S. Stepanyan,B. E. Stokes,P. Stoler,Konstantin Stopani,S. Strauch,M. Taiuti,Susan Taylor,D. J. Tedeschi,Roy Thompson,A. Tkabladze,A. Tkabladze,S. Tkachenko,S. Tkachenko,L. Todor,C. Tur,M. Ungaro,Michael Vineyard,Michael Vineyard,A. V. Vlassov,Larry Weinstein,D. P. Weygand,Michael L. Williams,E. Wolin,Michael Wood,A. Yegneswaran,Lorenzo Zana,J. Zhang +220 more
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In this paper, the authors report on the most comprehensive data set obtained on differential and fully integrated cross sections for the process ep{yields}e{sup '}p{pi}{sup +}{pi}sup -}.Abstract:
This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process ep{yields}e{sup '}p{pi}{sup +}{pi}{sup -}. The data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the as yet unexplored kinematic region of photon virtuality 0.2<Q{sup 2}<0.6 GeV{sup 2} and invariant mass of the final hadron system W from 1.3 to 1.57 GeV. For the first time, nine independent one-fold differential cross sections were determined in each bin of W and Q{sup 2} covered by the measurements. A phenomenological analysis of the data allowed us to establish the most significant mechanisms contributing to the reaction. The nonresonant mechanisms account for a major part of cross sections. However, we find sensitivity to s-channel excitations of low-mass nucleon resonances, especially to the N(1440)P{sub 11} and N(1520)D{sub 13} states in kinematic dependencies of the one-fold differential cross sections.read more
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Journal ArticleDOI
Baryon spectroscopy
TL;DR: In this paper, the authors identified issues discriminating between different views of the resonance spectrum of baryons and discussed how open questions in baryon spectroscopy may find answers from photo-and electro-production experiments which are presently carried out in various laboratories.
Journal ArticleDOI
Explanation and Prediction of Observables using Continuum Strong QCD
Ian C. Cloët,Craig D. Roberts +1 more
TL;DR: The last five years have brought considerable progress in the study of the bound-state problem in continuum quantum field theory as discussed by the authors, and it appears possible that the next five years will bring profound growth in our store of knowledge about hadrons and nuclei.
Journal ArticleDOI
Progress towards understanding baryon resonances.
TL;DR: Recent results from photo- and electroproduction experiments provide intriguing indications for new states and shed light on the structure of some of the known nucleon excitations, and an overview of theoretical approaches are given.
Journal ArticleDOI
Electroexcitation of Nucleon Resonances from CLAS Data on Single Pion Electroproduction
Inna Aznauryan,Volker D. Burkert,A. S. Biselli,H. Egiyan,H. Egiyan,K. Joo,K. Joo,W. Kim,K. Park,K. Park,L. C. Smith,M. Ungaro,M. Ungaro,M. Ungaro,K. P. Adhikari,M. Anghinolfi,H. Avakian,J. Ball,M. Battaglieri,V. Batourine,I. Bedlinskiy,M. Bellis,C. Bookwalter,D. Branford,W. J. Briscoe,W. K. Brooks,W. K. Brooks,S. L. Careccia,Daniel S. Carman,Philip L. Cole,P. Collins,V. Crede,Annalisa D'Angelo,A. Daniel,R. De Vita,E. De Sanctis,A. Deur,B. Dey,S. Dhamija,R. Dickson,Chaden Djalali,D. Doughty,D. Doughty,R. Dupré,A. El Alaoui,Latifa Elouadrhiri,P. Eugenio,G. V. Fedotov,S. Fegan,T. A. Forest,T. A. Forest,M. Y. Gabrielyan,Gerard Gilfoyle,K. L. Giovanetti,F. X. Girod,J. T. Goetz,W. Gohn,E. Golovatch,R. W. Gothe,M. Guidal,L. Guo,L. Guo,K. Hafidi,H. Hakobyan,C. Hanretty,N. Hassall,D. Heddle,D. Heddle,K.H. Hicks,M. Holtrop,Charles Hyde,Y. Ilieva,Y. Ilieva,D. G. Ireland,B. S. Ishkhanov,E. L. Isupov,S. S. Jawalkar,H. S. Jo,J. R. Johnstone,J. R. Johnstone,D. Keller,M. Khandaker,P. Khetarpal,Avraham Klein,Avraham Klein,Friedrich Klein,Laird Kramer,Laird Kramer,V. P. Kubarovsky,S. E. Kuhn,S. V. Kuleshov,V. E. Kuznetsov,K. Livingston,H. Y. Lu,M. Mayer,J. McAndrew,M. E. McCracken,B. McKinnon,C. A. Meyer,T. Mineeva,M. Mirazita,Victor Mokeev,Victor Mokeev,B. Moreno,K. Moriya,B. Morrison,H. Moutarde,E. Munevar,P. Nadel-Turonski,R. Nasseripour,R. Nasseripour,R. Nasseripour,C. S. Nepali,S. Niccolai,G. Niculescu,I. Niculescu,M. R. Niroula,M. Osipenko,A. I. Ostrovidov,A. I. Ostrovidov,S. Park,E. Pasyuk,S. Anefalos Pereira,S. Pisano,O. Pogorelko,S. Pozdniakov,J. W. Price,S. Procureur,Y. Prok,Y. Prok,D. Protopopescu,D. Protopopescu,B. A. Raue,B. A. Raue,G. Ricco,M. Ripani,Barry Ritchie,G. Rosner,P. Rossi,F. Sabatié,M. S. Saini,J. Salamanca,R. A. Schumacher,H. Seraydaryan,Nikolay Shvedunov,D. I. Sober,D. Sokhan,S. S. Stepanyan,P. Stoler,Igor Strakovsky,S. Strauch,S. Strauch,R. Suleiman,M. Taiuti,D. J. Tedeschi,S. Tkachenko,Michael Vineyard,D. P. Watts,D. P. Watts,Larry Weinstein,D. P. Weygand,Michael L. Williams,Michael Wood,L. Zana,J. Zhang,B. Zhao,B. Zhao +166 more
TL;DR: In this article, the electroexcitation of the low mass resonances of the proton was analyzed using fixed-t$ dispersion relations and a unitary isobar model, and the results were obtained in the comprehensive analysis of data from the CBAF large acceptance spectrometer (CLAS) detector at the Thomas Jefferson National Accelerator Facility (JLab).
Journal ArticleDOI
Studies of nucleon resonance structure in exclusive meson electroproduction
Inna Aznauryan,Inna Aznauryan,Adnan Bashir,Vladimir M. Braun,Stanley J. Brodsky,Stanley J. Brodsky,Volker D. Burkert,Lei Chang,Lei Chang,Lei Chang,Ch. Chen,Ch. Chen,Ch. Chen,Bruno El-Bennich,Ian C. Cloët,Ian C. Cloët,Ian C. Cloët,Philip L. Cole,Robert G. Edwards,G. V. Fedotov,G. V. Fedotov,Mauro Giannini,Mauro Giannini,R. W. Gothe,Franz Gross,Franz Gross,Huey-Wen Lin,P. Kroll,T.-S. H. Lee,T.-S. H. Lee,Wally Melnitchouk,V. I. Mokeev,V. I. Mokeev,M. T. Peña,Gilberto Ramalho,Gilberto Ramalho,Craig D. Roberts,Craig D. Roberts,Elena Santopinto,G. F. de Teramond,Kazuo Tsushima,Kazuo Tsushima,David J. Wilson,David J. Wilson,David J. Wilson +44 more
TL;DR: In this paper, the authors present a detailed description of the physics that can be addressed through N* structure studies in exclusive meson electroproduction, including recent advances in reaction theory for extracting N* electrocouplings from meson electrodes.
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TL;DR: The CEBAF Large Acceptance Spectrometer (CLAS) as mentioned in this paper is used to study photo-and electro-induced nuclear and hadronic reactions by providing efficient detection of neutral and charged particles over a good fraction of the full solid angle.
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Dynamical coupled-channel model of meson production reactions in the nucleon resonance region
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TL;DR: In this article, the authors reported new experimental values for the ratios E(1+)/M(1+) and S(1 +)/M (1+) over the range Q2 = 0.4-1.8 GeV2, extracted from precision p(e,e(')p)pi(0) data using a truncated multipole expansion.
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