Can long-range nuclear properties Be influenced by short range interactions? A chiral dynamics estimate

Recent experiments and many-body calculations indicate that approximately 20% of the nucleons in medium and heavy nuclei (A≥12) are part of short-range correlated (SRC) primarily neutron-proton (np) pairs. We find that using chiral dynamics to account for the formation of np pairs due to the effects...

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Bibliographic Details
Published in:Physics letters. B 2019-06, Vol.793 (C), p.360-364
Main Authors: Miller, G.A., Beck, A., May-Tal Beck, S., Weinstein, L.B., Piasetzky, E., Hen, O.
Format: Article
Language:English
Subjects:
Astronomy & Astrophysics
ASTRONOMY AND ASTROPHYSICS
Physics
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Summary:Recent experiments and many-body calculations indicate that approximately 20% of the nucleons in medium and heavy nuclei (A≥12) are part of short-range correlated (SRC) primarily neutron-proton (np) pairs. We find that using chiral dynamics to account for the formation of np pairs due to the effects of iterated and irreducible two-pion exchange leads to values consistent with the 20% level. We further apply chiral dynamics to study how these correlations influence the calculations of nuclear charge radii, that traditionally truncate their effect, to find that they are capable of introducing non-negligible effects.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2019.05.010