Document Type

Article

Publication Date

3-2021

DOI

10.1103/PhysRevC.103.L031301

Publication Title

Physical Review C

Volume

103

Issue

3

Pages

1-6

Abstract

The extraction of the relative abundances of short-range correlated (SRC) nucleon pairs from inclusive electron scattering is studied using the generalized contact formalism (GCF) with several nuclear interaction models. GCF calculations can reproduce the observed scaling of the cross-section ratios for nuclei relative to deuterium at high xB and large Q2, a2 = (σA/A)/(σd/2). In the nonrelativistic instant-form formulation, the calculation is very sensitive to the model parameters and only reproduces the data using parameters that are inconsistent with ab initio many-body calculations. Using a light-cone GCF formulation significantly decreases this sensitivity and improves the agreement with ab initio calculations. The ratio of similar mass isotopes, such as 40Ca and 48Ca, should be sensitive to the nuclear asymmetry dependence of SRCs, but is found to also be sensitive to low-energy nuclear structure. Thus the empirical association of SRC pair abundances with the measured a2 values is only accurate to about 20%. Improving this will require cross-section calculations that reproduce the data while properly accounting for both nuclear structure and relativistic effects.

Comments

© 2021 American Physical Society

"The author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged. If a fee is charged, then APS permission must be sought. In all cases, the appropriate bibliographic citation and notice of the APS copyright must be included."

Original Publication Citation

Weiss, R., Denniston, A. W., Pybus, J. R., Hen, O., Piasetzky, E., Schmidt, A., Weinstein, L. B., & Barnea, N. (2021). Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data. Physical Review C, 103(3), Article L031301. https://doi.org/10.1103/PhysRevC.103.L031301

ORCID

0000-0001-5416-2900 (Weinstein)

Share

COinS