Antinucleon-nucleon interaction in chiral effective field theory

被引：59

作者：

Kang, Xian-Wei ^{[1
,2
]}

Haidenbauer, Johann ^{[1
,2
]}

Meissner, Ulf-G. ^{[1
,2
,3
,4
]}

机构：

[1] Forschungszentrum Julich, Inst Kernphys, Inst Adv Simulat, D-52425 Julich, Germany

[2] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

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

[4] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 02期

关键词：

Chiral Lagrangians; Scattering Amplitudes; QCD; NEAR-THRESHOLD ENHANCEMENT; MESON-BARYON DYNAMICS; PARTIAL-WAVE ANALYSIS; ANTIPROTONIC HYDROGEN; LOW-ENERGY; SCATTERING; FORCES; LAGRANGIANS; SYSTEM; SHIFT;

D O I：

10.1007/JHEP02(2014)113

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Results of an exploratory study of the antinucleon-nucleon interaction within chiral effective field theory are reported. The antinucleon-nucleon potential is derived up to next-to-next-to-leading order, based on a modified Weinberg power counting, in close analogy to pertinent studies of the nucleon-nucleon interaction. The low-energy constants associated with the arising contact interactions are fixed by a fit to phase shifts and inelasticities provided by a recently published phase-shift analysis of antiproton-proton scattering data. The overall quality of the achieved description of the antinucleon-nucleon amplitudes is comparable to the one found in case of the nucleon-nucleon interaction at the same order. For most S-waves and several P-waves good agreement with the antinucleon-nucleon phase shifts and inelasticities is obtained up to laboratory energies of around 200 MeV.

引用

页数：25

共 61 条

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