Radii and Binding Energies in Oxygen Isotopes: A Challenge for Nuclear Forces

Lapoux, V, Soma, V, Barbieri, C, Hergert, H, Holt, JD and Stroberg, SR (2016) Radii and Binding Energies in Oxygen Isotopes: A Challenge for Nuclear Forces Physical Review Letters, 117.

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Abstract

We present a systematic study of both nuclear radii and binding energies in (even) oxygen isotopes from the valley of stability to the neutron drip line. Both charge and matter radii are compared to state-of-the-art ab initio calculations along with binding energy systematics. Experimental matter radii are obtained through a complete evaluation of the available elastic proton scattering data of oxygen isotopes. We show that, in spite of a good reproduction of binding energies, ab initio calculations with conventional nuclear interactions derived within chiral effective field theory fail to provide a realistic description of charge and matter radii. A novel version of two- and three-nucleon forces leads to considerable improvement of the simultaneous description of the three observables for stable isotopes but shows deficiencies for the most neutron-rich systems. Thus, crucial challenges related to the development of nuclear interactions remain.

Item Type:	Article
Subjects :	Physics
Divisions :	Faculty of Engineering and Physical Sciences > Physics
Authors :	Name Email ORCID Lapoux, V Soma, V Barbieri, C Hergert, H Holt, JD Stroberg, SR
Date :	27 July 2016
DOI :	10.1103/PhysRevLett.117.052501
Copyright Disclaimer :	© 2016 American Physical Society
Depositing User :	Symplectic Elements
Date Deposited :	24 Oct 2016 14:32
Last Modified :	31 Oct 2017 18:50
URI:	http://epubs.surrey.ac.uk/id/eprint/812572

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