Complex-mass renormalization in hadronic EFT: Applicability at two-loop order

被引：7

作者：

Djukanovic, D. ^{[1
]}

Epelbaum, E. ^{[2
]}

Gegelia, J. ^{[3
,4
,5
]}

Krebs, H. ^{[2
]}

Meissner, U. -G. ^{[3
,4
,6
,7
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Helmholtz Inst Mainz, D-55099 Mainz, Germany

[2] Ruhr Univ Bochum, Inst Theoret Phys 2, D-44780 Bochum, Germany

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

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

[5] Tbilisi State Univ, GE-0186 Tbilisi, Georgia

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

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

来源：

EUROPEAN PHYSICAL JOURNAL A | 2015年 / 51卷 / 08期

基金：

美国国家科学基金会;

关键词：

CHIRAL PERTURBATION-THEORY; INFRARED REGULARIZATION; MAGNETIC-MOMENT; ROPER RESONANCE; VECTOR-MESONS; NUCLEON; EXPANSION; LAGRANGIANS; INTEGRALS; SCHEME;

D O I：

10.1140/epja/i2015-15101-5

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 discuss the application of the complex-mass scheme to multi-loop diagrams in hadronic effective field theory by considering as an example a two-loop self-energy diagram. We show that the renormalized two-loop diagram satisfies the power counting.

引用

页数：5

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