{ "id": "hep-ph/0102190", "version": "v1", "published": "2001-02-15T14:33:51.000Z", "updated": "2001-02-15T14:33:51.000Z", "title": "Pion form factor in large $N_c$ QCD", "authors": [ "C. A. Dominguez" ], "comment": "Plain Latex, 9 pages, 2 figures", "journal": "Phys.Lett. B512 (2001) 331-334", "doi": "10.1016/S0370-2693(01)00576-7", "categories": [ "hep-ph", "nucl-th" ], "abstract": "The electromagnetic form factor of the pion is obtained using a particular realization of QCD in the large $N_c$ limit, which sums up the infinite number of zero-width resonances to yield an Euler's Beta function of the Veneziano type. This form factor agrees with space-like data much better than single rho-meson dominance. A simple unitarization ansatz is illustrated, and the resulting vector spectral function in the time-like region is shown to be in reasonable agreement with the ALEPH data from threshold up to about 1.3 ${GeV}^2$.", "revisions": [ { "version": "v1", "updated": "2001-02-15T14:33:51.000Z" } ], "analyses": { "keywords": [ "pion form factor", "resulting vector spectral function", "simple unitarization ansatz", "eulers beta function", "single rho-meson dominance" ], "tags": [ "journal article" ], "note": { "typesetting": "LaTeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable", "inspire": 553134 } } }