Baryon fields withUL(3)×UR(3)chiral symmetry. V. Pion-nucleon and kaon-nucleonΣterms
نویسندگان
چکیده
منابع مشابه
Pion-nucleon and kaon-nucleon scattering lengths in QCD sum rules.
The pion-nucleon and kaon-nucleon scattering lengths are studied in the QCD sum rule. We show that the leading and next-to-leading order terms of the OPE give rise to the Tomozawa-Weinberg and sigma terms, respectively. We also show that in the kaon-nucleon system the Λ(1405) contribution has to be subtracted from the OPE side in order to obtain the scattering length. The odd components of the ...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2016
ISSN: 2469-9985,2469-9993
DOI: 10.1103/physrevc.93.065208