A Mechanism for Instanton Induced Chiral Symmetry Breaking in QCD

Details A Mechanism for Instanton Induced Chiral Symmetry Breaking in QCD A Mechanism for Instanton Induced Chiral Symmetry Breaking in QCD

1995-07-13

arxiv.org/abs/hep-ph/9507297v1

Eur.Phys.J.C4:679-683,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

ReVTeX 3.0, 12 pages, one ps figure file in tarred, zipped uuencoded format

Scientific paper

10.1007/s100520050237

We propose a mechanism for instanton induced chiral symmetry breaking in QCD with fundamental scalars. The model Lagragian that we use has the same symmetry properties as QCD. The scalar fields develop vacuum expectation values at a non-trivial minimum and generate masses for thhe light quarks. The minimization condition is also used to break the $SU(N_f)$ flavour symmetry in order to make the $s$ quark heavier than the two lighter ones. Thus a vacuum of the theory that is not chirally invariant is obtained.

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