ar X iv : h ep - p h / 03 10 17 4 v 1 1 4 O ct 2 00 3 Rho Meson Properties

نویسنده

  • J. J. Sanz - Cillero
چکیده

We study the mass, width and couplings of the lightest vector multiplet. Effective field theories based on chiral symmetry and a 1/NC counting are adopted in order to describe the vector form factor associated to the two-pseudoscalar matrix element of the QCD vector current. The bare poles of the intermediate s–channel resonances are regularized through a Dyson-Schwinger-like summation. This procedure provides many interesting properties, as the pole mass M pole ρ

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تاریخ انتشار 2003