%0 Journal Article
%A Carrasco, J. A.
%A Nebreda Manjón, Jenifer
%A Peláez Sagredo, José Ramón
%T Dispersive calculation of complex Regge trajectories for the lightest f_2 resonances and the K^∗(892)
%D 2015
%@ 0370-2693
%U https://hdl.handle.net/20.500.14352/24277
%X We apply a recently developed dispersive formalism to calculate the Regge trajectories of the f_2(1270), f´_ 2(1525) and K^∗(892) mesons. Trajectories are calculated, not fitted to a family of resonances. Assuming that these resonances can be treated in the elastic approximation, the only input are the pole position and residue of a resonance. In all three cases, the predicted Regge trajectories are almost real and linear, with slopes in agreement with the universal value of order 1 GeV_(−2). We also show how these results barely change when considering more than two subtractions in the dispersive formalism.
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