The nuclear contacts and short range correlations in nuclei
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Author(s)
Weiss, R.
Cruz-Torres, R.
Barnea, N.
Piasetzky, E.
Cruz Torres, Reynier
Hen, Or
Date Issued
February 2018
Journal
Physics Letters B
Publisher
Elsevier
Citation
Weiss, R., et al. “The Nuclear Contacts and Short Range Correlations in Nuclei.” Physics Letters B, vol. 780, May 2018, pp. 211–15. © 2018 The Author(s)
Version
Final published version
Abstract
Atomic nuclei are complex strongly interacting systems and their exact theoretical description is a long-standing challenge. An approximate description of nuclei can be achieved by separating its short and long range structure. This separation of scales stands at the heart of the nuclear shell model and effective field theories that describe the long-range structure of the nucleus using a mean-field approximation. We present here an effective description of the complementary short-range structure using contact terms and stylized two-body asymptotic wave functions. The possibility to extract the nuclear contacts from experimental data is presented. Regions in the two-body momentum distribution dominated by high-momentum, close-proximity, nucleon pairs are identified and compared to experimental data. The amount of short-range correlated (SRC) nucleon pairs is determined and compared to measurements. Non-combinatorial isospin symmetry for SRC pairs is identified. The obtained one-body momentum distributions indicate dominance of SRC pairs above the nuclear Fermi-momentum.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2018.01.061
