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We review how the Regge trajectory of an elastic resonance can be obtained just from its pole position and coupling, using a dispersive formalism. This allows us to deal correctly with the finite widths of resonances in Regge trajectories. In th[...]texto impreso
Llanes Estrada, Felipe José ; Bicudo, Pedro ; Cardoso, Marco ; Van Cauteren, Tim | Polska Akademia Nauk, Instytut Fizyki | 2009-05-26We observe that excited hadrons provide an opportunity to probe from experiment the power-law running of the quark mass in the mid infrared, while the condition m(k)texto impreso
We review the recent analysis of ? K scattering data in terms of forward dispersion relations, and also present the parameters of the strange resonances. This work consists of fits to the data that are constrained to satisfy analyticity requirem[...]
