Effective field theory for proton halo nuclei

被引：55

作者：

Ryberg, Emil ^{[1
]}

Forssen, Christian ^{[1
]}

Hammer, H. -W. ^{[2
,3
,4
]}

Platter, Lucas ^{[1
,5
]}

机构：

[1] Chalmers Univ Technol, Dept Fundamental Phys, SE-41296 Gothenburg, Sweden

[2] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[3] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany

[4] GSI Helmholtzzentrum Schwerionenforsch, ExtreMe Matter Inst EMMI, D-64291 Darmstadt, Germany

[5] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW C | 2014年 / 89卷 / 01期

基金：

欧洲研究理事会; 瑞典研究理事会;

关键词：

FORM-FACTORS; SCATTERING; PHYSICS; F-17;

D O I：

10.1103/PhysRevC.89.014325

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We use halo effective field theory to analyze the universal features of proton halo nuclei bound due to a large S-wave scattering length. Our work provides a fully field-theoretical treatment of bound halo nuclei in the presence of a repulsive Coulomb interaction. With a Lagrangian built from effective core and valence-proton fields, we derive a leading-order expression for the charge form factor. Within the same framework we also calculate the radiative proton capture cross section. We present general results at leading order that can be applied to any one-proton halo system bound in a relative S wave. We illustrate the method by studying the excited 1/2(+) state of fluorine 17, for which we give results for the charge radius and the astrophysical S factor.

引用

页数：6

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