• Corpus ID: 15677448

Nambu-Jona-Lasinio Model vs QCD

  title={Nambu-Jona-Lasinio Model vs QCD},
  author={Koichi Yamawaki and Valentin I. Zakharov},
  journal={arXiv: High Energy Physics - Phenomenology},
We argue that the extended Nambu-Jona-Lasinio model which introduces four-quark interactions to describe hadron physics at low energies can be confronted with fundamental quantum chromodynamics by means of spectral sum rules. While there arise rather restrictive bounds on the strength of the effective four-quark interaction in the vector channel, introduction of the four-quark interaction in the pseudoscalar channel resolves a long standing puzzle of the sum rules. 
1 Citations

Adler function and hadronic contribution to the muon g-2 in a nonlocal chiral quark model

The behavior of the vector Adler function at spacelike momenta is studied in the framework of a covariant chiral quark model with instantonlike quark-quark interaction. This function describes the



in Proceedings of the Workshop on Skyrmions and Anomalies

  • Mogilany, Poland,
  • 1989

rant-i n-A i d for Sci enti c R esearch from the Japanese M i ni stry ofEducati on,Sci ence and C ul ture (N o. 05640339)and the Ishi da Foundati on

    Nucl. Phys

    • Nucl. Phys
    • 1990

    T hus,i t seem s fai r to say that the N Jlm odelw i th G V = 0

      G S 6 = 0 resul ts i n a sound phenom enol ogy,al though i t puts and m esons on di erent footi ng

        Phys. Rev

        • Phys. Rev
        • 1961