QCD SUM-RULES - ISOSPIN SYMMETRY BREAKINGS IN PION-NUCLEON COUPLINGS

Authors
HWANG WYP YANG ZS ZHONG YS ZHOU ZN ZHU SL
Citation
Wyp. Hwang et al., QCD SUM-RULES - ISOSPIN SYMMETRY BREAKINGS IN PION-NUCLEON COUPLINGS, Physical review. C. Nuclear physics, 57(1), 1998, pp. 61-68
Citations number
26
Categorie Soggetti
Physics, Nuclear
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
57
Issue
1
Year of publication
1998
Pages
61 - 68
Database
ISI
SICI code
0556-2813(1998)57:1<61:QS-ISB>2.0.ZU;2-F
Abstract
We use the method of QCD sum rules in the presence of an external poin t field to investigate isospin symmetry breakings in pion-nucleon coup lings. Possible manifestations of such isospin symmetry breakings are examined in the context of low-energy nucleon-nucleon scattering. We d iscuss numerical results in relation to both the existing data and oth er theoretical predictions.