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Showing 1 to 9 of 9 for “"Low Q2"”.
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First Leptonic Probe of Neutron Radii in Lead at Low-Q2
<p>Over the past decade, in Hall-A of the Thomas Jefferson National Accelerator Facility (TJNAF), both the HAPPEX and PREx collaborations have carried out various high-precision polarized elastic electron scattering experiments to explore the nuclear structure, the nucleon form factor and the weak …
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Measurement of Generalized GDH Integrand for the Neutron and 3He at Low Q2
… Such experimental tests at intermediate and low $Q^2$ deepen our knowledge of the transition from the asymptotic freedom regime to the color confinement regime in QCD.</p><p>Experiment E97-110 has been performed at the Thomas Jefferson National Accelerator Facility to precisely measure the …
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Measurement of the Spin Structure Function GD1 of the Deuteron and Its Moments at Low Q2
… polarized electron beams at relatively low energies of 1.056, 1.337, 1.989, 2.256 and 3.0 GeV from the CEBAF accelerator were scattered off longitudinally polarized NH<sub>3</sub> and ND<sub>3</sub> targets. Scattered electrons were recorded at very low scattering angles (down to …
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Vector polarization observables of the deuteron and a new measurement of the magnetic dipole form factor G(M)
… measured in both sectors of BLAST, allow the extraction of Te11 . To the best of our knowledge this is the first such use of a polarized target to determine Te11 . Furthermore, these data, when combined with measurements of A(Q2) and the target tensor polarization observables T20 and …
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Spin structure of the proton and the Q² evolution of the Gerasimov-Drell-Hearn integral
… The virtual photon four momentum squared, Q2, varied from 0.2GeV2/c2 to 1GeV2/c2 and the center of mass total energy W ranged up to 2GeV. The measurement was performed at the CEBAF Large Acceptance Spectrometer (CLAS) of the Thomas Jefferson National Accelerator Facility during the Fall of …
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Search for pre-existing Delta states at BLAST from ²H(e,e'[Delta]⁺⁺
… Accelerator Center a comprehensive study of low-Q2 spin-dependent electron scattering from deuterium has been carried out using the Bates Large Acceptance Spectrometer Toroid (BLAST). This experiment has employed an 850 MeV polarized electron beam from the MIT-Bates linear accelerator …
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Lowest Q² measurement of the [gamma] *p [right arrow] [Delta] reaction : probing the pionic contribution
… The data presented in this work fill gaps in the low Q2, long distance region where the pion cloud is expected to dominate and to produce significant Q2 variation. The p(e, e'p)7r0 reaction was measured in the A region at Q2 = 0.060 (GeV/c)2, the lowest Q2 to date for pion electroproduction, …
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High precision measurement of the proton elastic form factor ratio at low Q²
… form factor ratio [mu]GE/GM in the range of Q2 = 0.3-0.7(GeV/c)2 by recoil polarimetry. Data were taken in 2008 at the Thomas Jefferson National Accelerator Facility in Virginia, USA. A 1.2 GeV polarized electron beam was scattered off a cryogenic hydrogen target. The recoil proton was …
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Measurement of the pion exclusive electro-production cross-section in the E12-19-006 experiment in Hall-C at Jefferson Lab
… and kaon electro-production reactions at various Q2 and -t values. The E12-19-006 experiment is conducted within the confines of experimental Hall C at the Thomas Jefferson National Accel- erator Facility, USA, for such studies. The primary aim of the experiment is to first enhance our …