Nuclear dependence of R=(σ_L)/(σ_T) and Callan-Gross relation in nuclei

2017/05/28 by F. Zaidi, Zaidi, F., H. Haider +7 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.1705.09903

10 pages, 7 figures

arxiv created 2017/05/28 · arxiv updated 2017/05/30

Abstract

The electromagnetic nuclear structure functions F_1A (x,Q²), F_2A (x,Q²) and F_LA (x,Q²) have been calculated using a microscopic model of nucleus to study the nuclear medium effects on the ratio R_A(x,Q²)=\fracσ_LA (x,Q²)σ_TA (x,Q²) = \fracF_LA (x,Q²)2xF_1A (x,Q²) and the Callan-Gross relation(CGR) in nuclei. The nuclear medium effects due to the Fermi motion, binding energy, nucleon correlations, mesonic contribution and shadowing have been taken into account. The theoretical results for the nuclear dependence of R_A (x,Q²) and its impact on CGR have been presented and compared with the available experimental data on the various nuclear targets. The predictions have been made for R_A (x,Q²) in the kinematic region of x and Q² for some nuclei relevant for the future experiments to be performed at the JLab.

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• Nucleon and nuclear structure functions with nonperturbative and higher order perturbative QCD effects

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