Nucleon-nucleon correlations and the single-particle strength in atomic nuclei
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1-s2.0-S0370269319308329-main.pdf
Description
Published version
Size
464.28 KB
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Checksum (MD5)
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Author(s)
Paschalis, S.
Petri, M.
Macchiavelli, A.O.
Hen, Or
Piasetzky, E.
Date Issued
November 2019
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Paschalis, S. et al., "Nucleon-nucleon correlations and the single-particle strength in atomic nuclei." Physics Letters B 800 (January 2020): 135110 doi. 10.1016/j.physletb.2019.135110 ©2019 Authors
Version
Final published version
Abstract
We propose a phenomenological approach to examine the role of short- and long-range nucleon-nucleon correlations in the quenching of single-particle strength in atomic nuclei and their evolution in asymmetric nuclei and neutron matter. These correlations are thought to be the reason for the quenching of spectroscopic factors observed in (e,e′p), (p,2p) and transfer reactions. We show that the recently observed increase of the high-momentum component of the protons in neutron-rich nuclei is consistent with the reduced proton spectroscopic factors. Our approach connects recent results on short-range correlations from high-energy electron scattering experiments with the quenching of spectroscopic factors and addresses for the first time quantitatively this intriguing question in nuclear physics, in particular regarding its isospin dependence. We also speculate about the nature of a quasi-proton (nuclear polaron) in neutron matter and its kinetic energy, an important quantity for the properties of neutron stars. ©2019 The Author(s)
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.2019.135110
