2018 Impact factor 4.843
Particles and Fields
Eur. Phys. J. C 4, 679-683
DOI 10.1007/s100529800809

Instanton induced chiral symmetry breaking
in extended QCD model

Rahul Basu, R. Parthasarathy

The Institute of Mathematical Sciences, Madras-600 113, India (e-mail: rahul,sarathy@imsc.ernet)

Received: 16 August 1996 / Revised version: 15 October 1997 / Published online: 26 February 1998

Abstract
A mechanism for instanton induced chiral symmetry breaking in an extended QCD model (QCD with fundamental scalars) is proposed to describe quarks and gluons inside a baryon. The model Lagrangian that we use has the same symmetry properties as QCD. The scalar fields are shown to develop vacuum expectation values in the instanton background and generate masses for the three generation of quarks. The minimization condition is also used to break the flavour symmetry to make the s-quark heavier that the u and d quarks.


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