Range corrections in proton halo nuclei
Artikel i vetenskaplig tidskrift, 2016

We analyze the effects of finite-range corrections in halo effective field theory for S-wave proton halo nuclei. We calculate the charge radius to next-to-leading order and the astrophysical S-factor for low-energy proton capture to fifth order in the low energy expansion. As an application, we confront our results with experimental data for the S-factor for proton capture on Oxygen-16 into the excited 1/2(+) state of Fluorine-17. Our low-enegrgy theory is characterized by a systematic low-energy expansion, which can be used to quantify an energy-dependent model error to be utilized in data fitting. Finally, we show that the existence of proton halos is suppressed by the need for two fine tunings in the underlying theory.

Halo nuclei

Effective field theory

drip-line

scattering

states

eft

Charge radius

Physics

Radiative capture

effective-field theory

Författare

EMIL RYBERG

Chalmers, Fysik, Subatomär fysik och plasmafysik

Christian Forssen

Chalmers, Fysik, Subatomär fysik och plasmafysik

H. W. Hammer

GSI Helmholtzzentrum für Schwerionenforschung

Technische Universität Darmstadt

Lucas Platter

Chalmers, Fysik, Subatomär fysik och plasmafysik

Annals of Physics

0003-4916 (ISSN) 1096-035X (eISSN)

Vol. 367 13-32

Ab initio approach to nuclear structure and reactions (++) (ANSR)

Europeiska kommissionen (FP7), 2009-12-01 -- 2014-11-30.

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1016/j.aop.2016.01.008