Tests of Large N_{c} QCD from Hadronic τ Decay
Abstract
We use the ALEPH Collaboration data on vector and axialvector spectral functions to test simple duality properties of QCD in the large N_{c} limit, which emerge in the approximation of a minimal hadronic ansatz of a spectrum of narrow states. These duality properties relate the short and longdistance behaviors of specific correlation functions, which are order parameters of spontaneous chiral symmetry breaking, in a way that we find well supported by the data.
 Publication:

Physical Review Letters
 Pub Date:
 January 2001
 DOI:
 10.1103/PhysRevLett.86.14
 arXiv:
 arXiv:hepph/0007338
 Bibcode:
 2001PhRvL..86...14P
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 4 pages, 2 figures