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Fano theory for hadronic resonances: the rho meson and the pionic continuum

N. E. Ligterink
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Abstract

We develop a model-independent analysis of hadronic scattering data in the resonance region, where the resonance shape follows from the matrix elements of a Hamiltonian. We investigate the rho meson in the tau decay. We demonstrate that the rho meson resonance in the two-pion decay of the tau lepton is described well through the coupling of a bare rho meson to the two-pion and the four-pion continuum. Furthermore, this four-pion continuum corresponds with the data of the four-pion decay channel of the tau lepton at energies up to 1.1 GeV.

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N. E. Ligterink. 2002-03-20. Fano theory for hadronic resonances: the rho meson and the pionic continuum. https://arxiv.org/abs/nucl-th/0203054

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