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Showing 1 to 5 of 5 for “"Proton Spin Structure"”.
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The radiance of the gluon spin : constraining the proton spin structure with the direct photon double helicity asymmetry
… fundamental to the observable universe, the proton is not elementary. Rather the particle is a bound state of three valence quarks and the QCD vacuum that condenses around them, its properties an amalgamation of those underlying degrees of freedom. Naive expectations presume that …
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Measurement of the Proton A1 and A2 Spin Asymmetries: Probing Color Forces
The Spin Asymmetries of the Nucleon Experiment (SANE) measured the proton spin structure function g2 in a range of Bjorken x, 0.3 < x < 0.8, where extraction of the twist-3 matrix element dp2 (an integral of g2 weighted by x2) is most sensitive. The data was taken from Q2 equal to 2.5 GeV 2 up to …
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Spin structure of the proton and the Q² evolution of the Gerasimov-Drell-Hearn integral
… A cryogenic NH3 target was used as a source of protons polarized in the direction of the incident electron beam. For the first time, proton spin structure functions were studied with precision in the resonance region. The data indicate that a dramatic change in the spin structure occurs between …
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Transverse single-spin asymmetries in pion-induced Drell-Yan and J/Psi production at COMPASS
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-15 without embargo terms
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Precision Measurement of the Spin Structure of the Proton and the Deuteron
… Stanford Linear Accelerator Center measured the spin structure functions <em>g</em>1 and <em>g</em>2 of the proton and deuteron using deep inelastic scattering of 50 GeV polarized electrons from dynamically polarized, solid <sup>15</sup>NH<sub>3</sub> and <sup>6</sup>LiD targets. Three …