Low-Q scaling, duality, and the EMC effect

Details Low-Q scaling, duality, and the EMC effect Low-Q scaling, duality, and the EMC effect

2003-07-11

arxiv.org/abs/nucl-ex/0307012v3

Phys.Rev. C73 (2006) 035205

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 3 figures, 1 table, submitted to Phys. Rev. C

Scientific paper

High energy lepton scattering has been the primary tool for mapping out the quark distributions of nucleons and nuclei. Data on the proton and deuteron have shown that there is a fundamental connection between the low and high energy regimes, referred to as quark-hadron duality. We present the results of similar studies to more carefully examine scaling, duality, and in particular the EMC effect in nuclei. We extract nuclear modifications to the structure function in the resonance region, and for the first time demonstrate that nuclear effects in the resonance region are identical to those measured in deep inelastic scattering. With the improved precision of the data at large $x$, we for the first time observe that the large-x crossover point appears to occur at lower $x$ values in carbon than in iron or gold.

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