Matching meson resonances to OPE in QCD

Details Matching meson resonances to OPE in QCD Matching meson resonances to OPE in QCD

2005-09-14

arxiv.org/abs/hep-ph/0509144v1

Int.J.Mod.Phys. A21 (2006) 885-888

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, talk given at the First Workshop on Quark Hadron Duality and the Transition to pQCD (June 2005, Frascati, Italy) and

Scientific paper

10.1142/S0217751X0603223X

We investigate the possible corrections to the linear Regge trajectories for the light-quark meson sector by matching two-point correlators of quark currents to the Operator Product Expansion. We find that the allowed modifications to the linear behavior must decrease rapidly with the principal quantum number. After fitting the lightest states in each channel and certain low-energy constants the whole spectrum for meson masses and residues is obtained in a satisfactory agreement with phenomenology. The perturbative corrections to our results are discussed.

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