Effective field theory calculations of NN → NNπ

被引：18

作者：

Baru, Vadim ^{[1
,2
]}

Hanhart, Christoph ^{[3
,4
]}

Myhrer, Fred ^{[5
]}

机构：

[1] Ruhr Univ Bochum, Inst Theoret Phys 2, Fak Phys & Astron, D-44780 Bochum, Germany

[2] Inst Theoret & Expt Phys, Moscow 117218, Russia

[3] Inst Nucl Phys, Inst Adv Simulat, D-52425 Julich, Germany

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

[5] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2014年 / 23卷 / 04期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

piN and NN interactions; Chiral effective field theory; Chiral symmetry; few-nucleon systems; charge symmetry breaking; hadronic atoms; DIFFERENTIAL CROSS-SECTION; CHIRAL PERTURBATION-THEORY; CHARGE-SYMMETRY-BREAKING; HEAVY-MESON-EXCHANGE; REACTION NEAR-THRESHOLD; PROTON MASS DIFFERENCE; NP ELASTIC-SCATTERING; PRECISION CALCULATION; DEUTERON SCATTERING; NUCLEON SCATTERING;

D O I：

10.1142/S0218301314300045

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：

In this review, we present the recent advances for calculations of the reactions NN -> NN pi using chiral effective field theory chi EFT. Discussed are the next-to-next-to leading order ((NLO)-L-2) loop contributions with nucleon and Delta-isobar for near threshold s-wave pion-production. Results of recent experimental pion-production data for energies close to the threshold are analyzed. Several particular applications are discussed: (i) it is shown how the measured charge symmetry (CS) violating pion-production reaction can be used to extract the strong interaction contribution to the proton-neutron mass difference; (ii) the role of NN -> NN pi for the extraction of the pion-nucleon scattering lengths from pionic atoms data is illuminated.

引用

页数：67

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