Short Range Correlations at Large xbj through Inclusive Electron-nucleus Scattering

TL;DR

This paper reports on measurements of short-range correlations in various nuclei using inclusive electron scattering at Jefferson Lab, providing insights into two- and three-nucleon SRCs and their isospin dependence.

Contribution

It presents new experimental data on SRCs across multiple nuclei and explores their isospin dependence, advancing understanding of nuclear short-range structure.

Findings

Evidence for two-nucleon SRCs in heavy nuclei

Observation of three-nucleon SRCs at high x_bj

Isospin dependence in SRCs between calcium isotopes

Abstract

The experiment, E08-014, in Hall-A at Jefferson Lab aims to study the short-range correlations (SRC) which are necessary to explain the nuclear strength absent in the mean field theory. The cross sections for $\mathrm{^{2}H}$, $\mathrm{^{3}He}$, $\mathrm{^{4}He}$, $\mathrm{^{12}C}$, $\mathrm{^{40}Ca}$ and $\mathrm{^{48}Ca}$, were measured via inclusive quasielastic electron scattering from these nuclei in a $\mathrm{Q^{2}}$ range between 0.8 and $\mathrm{2.8~(GeV/c)^{2}}$ for $x_{bj}>1$. The cross section ratios of heavy nuclei to $\mathrm{^{2}H}$ were extracted to study two-nucleon SRC for $1<x_{bj}<2$, while the study of three-nucleon SRC was carried out from the cross section ratios of heavy nuclei to $\mathrm{^{3}He}$ for $x_{bj}\ge 2$. Meanwhile, the isospin dependence in SRCs has also been examined through the cross section ratio of $\mathrm{^{48}Ca}$ and $\mathrm{^{40}Ca}$.