Low-energy π NN system

被引：0
作者：
Baru, Vadim [1 ]
机构：
[1] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany
来源：
19TH INTERNATIONAL IUPAP CONFERENCE ON FEW-BODY PROBLEMS IN PHYSICS | 2009年 / 3卷
关键词：
NUCLEON SCATTERING LENGTHS; DIFFERENTIAL CROSS-SECTION; CHIRAL PERTURBATION-THEORY; PROTON MASS DIFFERENCE; DEUTERON SCATTERING; ISOSPIN VIOLATION; ANALYZING POWERS; THRESHOLD; FORCES; ATOMS;
D O I：
10.1051/epjconf/20100303003
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：
The reaction NN -> NN pi is studied at low energies within chiral perturbation theory (ChPT). Special emphasis is put on p-wave pion production in different channels of NN -> NN pi and Charge Symmetry Breaking (CSB) effects in pn -> d pi(0) recently measured at TRIUMF. A very good agreement of the p-wave amplitudes with experimental observables demonstrates the applicability of ChPT to these reactions regardless the large momentum transfer. The results of a complete calculation of CSB effects at leading order are presented. Based on this calculation we extract the strong contribution to the neutron-proton mass difference.
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页数：10
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