Constraints on medium modifications of nucleon form factors from quasielastic electron scattering

2003 ◽  
Vol 68 (2) ◽  
Author(s):  
K. S. Kim ◽  
L. E. Wright
Keyword(s):  
Electron Scattering ◽  
Form Factors ◽  
Nucleon Form Factors ◽  
Medium Modifications

THE BLAST EXPERIMENT: POLARIZED ELECTRON SCATTERING FROM HYDROGEN AND DEUTERIUM

2009 ◽  
Vol 24 (11n13) ◽  
pp. 875-880
Author(s):  
◽  
R. ALARCON
Keyword(s):  
Form Factor ◽  
Electron Scattering ◽  
Form Factors ◽  
Proton Form Factor ◽  
Beam Source ◽  
Polarized Electrons ◽  
Deuterium Target ◽  
Factor Ratio ◽  
Nucleon Form Factors ◽  
Large Acceptance

At the MIT-Bates Linear Accelerator Center, the nucleon form factors have been measured by scattering polarized electrons from vector-polarized hydrogen and deuterium. The experiment used the longitudinally polarized electron beam stored in the MIT-Bates South Hall Ring along with an isotopically pure, highly vector-polarized internal atomic hydrogen and deuterium target provided by an atomic beam source. The measurements were carried out with the symmetric Bates Large Acceptance Spectrometer Toroid (BLAST). Results are presented for the proton form factor ratio, [Formula: see text], and for the charge form factor of the neutron, [Formula: see text]. Both results are more precise than previous data in the corresponding Q2 ranges.

scholarly journals Sensitivity of elastic electron scattering off the 3He to the nucleon form factors

2019 ◽  
Vol 204 ◽  
pp. 05009 ◽  
Author(s):  
Serge Bondarenko ◽  
Valery Burov ◽  
Sergey Yurev
Keyword(s):  
Experimental Data ◽  
Electron Scattering ◽  
Impulse Approximation ◽  
Form Factors ◽  
Magnetic Form Factor ◽  
Elastic Electron ◽  
Elastic Electron Scattering ◽  
Relativistic Generalization ◽  
Nucleon System ◽  
Nucleon Form Factors

Elastic electron-3He scattering is studied in the relativistic impulse approximation. The amplitudes for the three-nucleon system – 3He – are obtained by solving the relativistic generalization of the Faddeev equation. The charge and magnetic form factor are calculated and compared with the experimental data for the momentum transfer squared up to 100 fm-2. The influence of the various nucleon form factors is investigated.

ASYMMETRIES IN POLARIZED ELECTRON SCATTERING AND THE STRANGENESS CONTENT OF THE NUCLEON

2009 ◽  
Vol 24 (11n13) ◽  
pp. 881-886
Author(s):  
SEBASTIAN BAUNACK
Keyword(s):  
Electron Scattering ◽  
Strange Quark ◽  
Form Factors ◽  
Strange Quarks ◽  
Quark Contribution ◽  
Nucleon Form Factors ◽  
Strangeness Content ◽  
Existing Data

In the viewpoint of QCD, the nucleon is made up of constituent quarks, sea quarks and gluons. Concerning the quark sea, also strange quarks can contribute to the nucleon properties. Parity violating electron scattering offers a tool to investigate the strange quark contribution to the nucleon form factors. The measurements of different experiments are discussed and the recent results from the A4 collaboration at MAMI is presented. Altogether the existing data allow to give constraints on the strangeness contribution.

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