Axial anomaly and the nucleon spin

Jin Hu Lin, C. S. Kim

Research output: Contribution to journalArticlepeer-review


In this letter we have taken a particular Lagrangian, which was introduced to resolve U(1) problem, as an effective QCD Lagrangian, and have derived a formula of the quark content of the nucleon spin. The difference between quark content of the proton (ΔΣp) and that of the neutron (ΔΣn) is evaluated by this formula. Neglecting the higher-order iaospin corrections, this formula can reduce to Efremov's results in the large-Nc limit.

Original languageEnglish
Pages (from-to)931-938
Number of pages8
JournalModern Physics Letters A
Issue number11
Publication statusPublished - 1996

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • Physics and Astronomy(all)


Dive into the research topics of 'Axial anomaly and the nucleon spin'. Together they form a unique fingerprint.

Cite this