Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data
Name
PhysRevC.103.L031301.pdf
Description
Published version
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554.43 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Weiss, R
Denniston, AW
Pybus, JR
Hen, O
Piasetzky, E
Schmidt, A
Weinstein, LB
Barnea, N
Date Issued
2021
Journal
Physical Review C
Publisher
American Physical Society (APS)
Citation
Weiss, R, Denniston, AW, Pybus, JR, Hen, O, Piasetzky, E et al. 2021. "Extracting the number of short-range correlated nucleon pairs from inclusive electron scattering data." Physical Review C, 103 (3).
Version
Final published version
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 Ca40 and Ca48, 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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PHYSREVC.103.L031301
