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Precise determination of the f(0)(600) and f(0)(980) pole parameters from a dispersive data analysis
Garcia-Martin, R ; Kami?ski, Robert ; Peláez Sagredo, José Ramón ; Ruiz de Elvira, Jacobo | American Physical Society | 2011-08-09We use our latest dispersive analysis of ? ? scattering data and the very recent K_(l4) experimental results to obtain the mass, width, and couplings of the two lightest scalar-isoscalar resonances. These parameters are defined from their associ[...]texto impreso
Garcia-Martin, R ; Kami?ski, Robert ; Peláez Sagredo, José Ramón | World Scientific Publ Co Pte Ltd | 2009-01-03We review how the use of recent precise data on kaon decays together with forward dispersion relations (FDR) and Roy’s equations allow us to determine the sigma resonance pole position very precisely, by using only experimental input. In additio[...]
