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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

STUDIES OF NUCLEON RESONANCE STRUCTURE IN EXCLUSIVE MESON ELECTROPRODUCTION

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Author(s):
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Aznauryan, I. G. [1, 2] ; Bashir, A. [3] ; Braun, V. M. [4] ; Brodsky, S. J. [5, 6] ; Burkert, V. D. [2] ; Chang, L. [7, 8, 9] ; Chen, Ch [7, 8, 10, 11] ; El-Bennich, B. [12, 13] ; Cloet, I. C. [7, 8, 14, 15] ; Cole, P. L. [16] ; Edwards, R. G. [2] ; Fedotov, G. V. [17, 18] ; Giannini, M. M. [19, 20] ; Gothe, R. W. [18] ; Gross, F. [2, 21] ; Lin, Huey-Wen [22] ; Kroll, P. [23] ; Lee, T. -S. H. [7, 8] ; Melnitchouk, W. [2] ; Mokeev, V. I. [2, 17] ; Pena, M. T. [24, 25] ; Ramalho, G. [26, 24] ; Roberts, C. D. [7, 8] ; Santopinto, E. [20] ; de Teramond, G. F. [27] ; Tsushima, K. [26, 14, 15] ; Wilson, D. J. [7, 8, 28]
Total Authors: 27
Affiliation:
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[1] Yerevan Phys Inst, Yerevan 375036 - Armenia
[2] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 - USA
[3] Univ Michoacana, Inst Fis & Matemat, Morelia 58040, Michoacan - Mexico
[4] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg - Germany
[5] Stanford Univ, Stanford Natl Accelerator Lab, Stanford, CA 94025 - USA
[6] Southern Denmark Univ, Origins CP3, Odense - Denmark
[7] Argonne Natl Lab, Div Phys, Argonne, IL 60439 - USA
[8] Illinois Inst Technol, Dept Phys, Chicago, IL 60616 - USA
[9] Forschungszentrum Julich, D-52425 Julich - Germany
[10] Univ Sci & Technol China, Inst Theoret Phys, Hefei 230026 - Peoples R China
[11] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026 - Peoples R China
[12] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo - Brazil
[13] Univ Cruzeiro Sul, BR-01506000 Sao Paulo - Brazil
[14] Univ Adelaide, Sch Chem & Phys, CSSM, Adelaide, SA 5005 - Australia
[15] Univ Adelaide, Sch Chem & Phys, CoEPP, Adelaide, SA 5005 - Australia
[16] Idaho State Univ, Dept Phys, Pocatello, ID 83209 - USA
[17] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119899 - Russia
[18] Univ S Carolina, Columbia, SC 29208 - USA
[19] Univ Genoa, Dipartimento Fis, Genoa - Italy
[20] Ist Nazl Fis Nucl, Sez Genova, Milan - Italy
[21] Coll William & Mary, Williamsburg, VA 23187 - USA
[22] Univ Washington, Dept Phys, Seattle, WA 98195 - USA
[23] Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal - Germany
[24] Univ Tecn Lisboa, CFTP, IST, UTL, P-1100 Lisbon - Portugal
[25] Univ Tecn Lisboa, Dept Fis, IST, UTL, P-1100 Lisbon - Portugal
[26] Univ Fed Rio Grande do Norte, Int Inst Phys, BR-59078400 Natal, RN - Brazil
[27] Univ Costa Rica, San Jose - Costa Rica
[28] Old Dominion Univ, Dept Phys, Norfolk, VA 23529 - USA
Total Affiliations: 28
Document type: Review article
Source: INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS; v. 22, n. 6 JUN 2013.
Web of Science Citations: 129
Abstract

Studies of the structure of excited baryons are key factors to the N{*} program at Jefferson Lab (JLab). Within the first year of data taking with the Hall B CLAS12 detector following the 12 GeV upgrade, a dedicated experiment will aim to extract the N{*} electrocouplings at high photon virtualities Q(2). This experiment will allow exploration of the structure of N{*} resonances at the highest photon virtualities ever achieved, with a kinematic reach up to Q(2) = 12 GeV2. This high-Q(2) reach will make it possible to probe the excited nucleon structures at distance scales ranging from where effective degrees of freedom, such as constituent quarks, are dominant through the transition to where nearly massless bare-quark degrees of freedom are relevant. In this document, we present a detailed description of the physics that can be addressed through N{*} structure studies in exclusive meson electroproduction. The discussion includes recent advances in reaction theory for extracting N{*} electrocouplings from meson electroproduction off protons, along with Quantum Chromodynamics (QCD)-based approaches to the theoretical interpretation of these fundamental quantities. This program will afford access to the dynamics of the nonperturbative strong interaction responsible for resonance formation, and will be crucial in understanding the nature of confinement and dynamical chiral symmetry breaking in baryons, and how excited nucleons emerge from QCD. (AU)

FAPESP's process: 09/51296-1 - Hadronic effects in heavy-quark physics
Grantee:Bruno Omar El Bennich
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 10/05772-3 - Hadronic effects in heavy-quark physics
Grantee:Bruno Omar El Bennich
Support Opportunities: Scholarships in Brazil - Young Researchers