Investigation of constraints on few-neutron forces in neutron matter by empirical information on the neutron skin of Ca48 and Pb208

Francesca Sammarruca
Phys. Rev. C 94, 054317 – Published 17 November 2016

Abstract

The neutron matter equation of state is calculated from two-neutron forces up to fifth order of the chiral expansion, and the order-by-order convergence of the predictions is investigated. Based on these equations of state, the binding energies and the neutron and proton density distributions in Pb208 and Ca48 are derived, with particular attention paid to the neutron skins, the focal point of this paper. Anticipating future experiments which will provide reliable information on the weak charge density in nuclei, the theoretical uncertainties and the possibility of constraining the size of few-neutron forces in neutron matter are discussed.

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  • Received 15 June 2016
  • Revised 26 September 2016

DOI:https://doi.org/10.1103/PhysRevC.94.054317

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Francesca Sammarruca

  • Physics Department, University of Idaho, Moscow, Idaho 83844-0903, USA

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Issue

Vol. 94, Iss. 5 — November 2016

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