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
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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.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 Q2. This experiment will allow exploration of the structure of N* resonances at the highest photon virtualities ever achieved, with a kinematic reach up to Q2 = 12 GeV2. This high-Q2 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 electropro...read more
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References
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Proceedings ArticleDOI
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TL;DR: In this paper, a constituent quark model based on the spectator formalism is applied to the gamma N -> N* transition for the three cases, where N* is the nucleon, the Delta and the Roper resonance.
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Nucleon and Pion Form Factors from $N_f=2+1$ Anisotropic Lattices
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TL;DR: In this article, a lattice-QCD calculation of nucleon and pion electromagnetic form factors and nucleon axial form factors was performed on 2+1-flavor anisotropic clover lattices.
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