Información del autor
Documentos disponibles escritos por este autor (12)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
texto impreso
Ruiz de Elvira, Jacobo ; Garcia Martin, R. ; Kami?ski, Robert ; Peláez Sagredo, José Ramón | American Institute of Physics | 2011We show how the new precise data on kaon decays together with forward dispersion relations, sum rules and once- and twice-subtracted Roy equations allow for a precise analysis of ? ? scattering. The once subtracted Roy equations provide a more [...]texto impreso
We first review the results of an analysis of ? ? interactions in S, P and D waves for the two-pion effective mass from threshold to about 1.4GeV. In particular, we show a recent improvement of this analysis above the KK? threshold using more da[...]texto impreso
Peláez Sagredo, José Ramón ; Martin, R. ; García, R. ; Kami?ski, Robert ; Yndurain, F.J. | Elsevier Science BV | 2009-01This talk is dedicated to the memory of Paco Yndurain, the original speaker in the conference. After a short account of his scientific career, we briefly review our ongoing collaboration to determine precisely the pi pi scattering amplitude incl[...]texto impreso
Kami?ski, Robert ; Garcia-Martin, R. ; Grynkiewicz, P. ; Peláez Sagredo, José Ramón ; Yndurain, F.J. | World Scientific Publ Co Pte Ltd | 2009-01-30We present a set of once subtracted dispersion relations which implement crossing symmetry conditions for the ?? scattering amplitudes below 1 GeV. We compare and discuss the results obtained for the once and twice subtracted dispersion relation[...]texto impreso
Garcia-Martin, R. ; Kami?ski, Robert ; Peláez Sagredo, José Ramón ; Ruiz de Elvira, Jacobo ; Yndurain, F.J. | Amer Physical Soc | 2011-04-04We improve our description of ? ? scattering data by imposing additional requirements on our previous fits, in the form of once-subtracted Roy-like equations, while extending our analysis up to 1100 MeV. We provide simple and ready to use parame[...]texto impreso
Peláez Sagredo, José Ramón ; Garcia Martin, R. ; Kami?ski, Robert ; Ynduráin, F. J. | Amer Inst Physics | 2008We review our recent analysis of ?? scattering data in terms of Roy equations and Forward Dispersion Relations, and present some preliminary results in terms of a new set of oncesubtracted coupled equations for partial waves. The first analysis[...]texto impreso
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
Kami?ski, Robert ; Garcia Martin, R. ; Peláez Sagredo, José Ramón ; Ruiz de Elvira, J. | Elsevier Science BV | 2013-01Use of the new and precise dispersive equations with imposed crossing symmetry condition to solve the longstanding puzzle in the parameters of the f_o(500), as well as the f_o(980) is presented. This puzzle is finally being settled thanks to ana[...]texto impreso
We 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 ? resonance pole position very precisely, by using only experimental input. In addition, w[...]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[...]texto impreso
Kami?ski, Robert ; Garcia-Martin, R. ; Grynkiewicz, P. ; Peláez Sagredo, José Ramón | Elsevier Science BV | 2009-01We show how the new precise data on kaon decays together with forward dispersion relations, sum rules and once- and twice-subtracted Roy’s equations allow for a precise determination of the sigma meson pole position. We present a comparison and [...]
