A Mechanism for Instanton Induced Chiral Symmetry Breaking in QCD
classification
✦ hep-ph
keywords
symmetrybreakingchiralinducedinstantonmechanismvacuumbreak
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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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