Measurements of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>A</mml:mi></mml:math>Dependence of Deep-Inelastic Electron Scattering from Nuclei

Abstract

The deep-inelastic electron-scattering cross sections per nucleon ${\ensuremath{\sigma}}_{A}$ for D, He, Be, C, A1, Ca, Fe, Ag, and Au were measured in the kinematic range $0.09&lt;~x&lt;~0.9$ and $2&lt;~{Q}^{2}&lt;~15$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ with use of electrons with energies ranging from 8 to 24.5 GeV. The ratio $\frac{{\ensuremath{\sigma}}_{A}}{{\ensuremath{\sigma}}_{\mathrm{D}}}$ is consistent with unity in the range $0.1&lt;x&lt;0.3$. For $0.3&lt;x&lt;0.8$, the ratio decreases logarithmically with atomic weight $A$, or linearly with average nuclear density. No ${Q}^{2}$ dependence in the ratio was observed over the kinematic range of the data.