Master formula approach to broken chiral U(3)xU(3) symmetry

Details Master formula approach to broken chiral U(3)xU(3) symmetry Master formula approach to broken chiral U(3)xU(3) symmetry

2009-09-09

arxiv.org/abs/0909.1606v3

Phys.Rev.D81:076004,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version to appear in PRD, 25 pages

Scientific paper

10.1103/PhysRevD.81.076004

The master formula approach to chiral symmetry breaking proposed by Yamagishi and Zahed is extended to the U_R(3)xU_L(3) group, in which effects of the U_A(1) anomaly and the flavor symmetry breaking m_u \not= m_d \not= m_s are properly contained. New identities for the gluon topological susceptibility and pi^0, eta, eta' -> gamma^(*) gamma^(*) decays are derived, which exactly embody the consequence from broken chiral symmetry in QCD without relying on any unphysical limit.

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