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Range corrections for two-neutron halo nuclei in effective theory

Authors
  • Canham, David L.
  • Hammer, H. -W.
Type
Preprint
Publication Date
Feb 25, 2010
Submission Date
Nov 17, 2009
Identifiers
DOI: 10.1016/j.nuclphysa.2010.02.014
Source
arXiv
License
Yellow
External links

Abstract

The range corrections to the universal properties and structure of two-neutron halo nuclei are investigated within an effective quantum mechanics framework. Treating the nucleus as an effective three-body system, we make a systematic improvement upon previous calculations by calculating the linear range corrections at next-to-leading order. Since the effective ranges for the neutron-core interactions are not known, we estimate the effective range to be set by the inverse of the pion mass. We investigate the possibility of excited Efimov states in two-neutron halo nuclei and calculate their mean square radii to next-to-leading order. We find that the effective range corrections are generally small and the leading order predictions are very robust.

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