Información del autor
Documentos disponibles escritos por este autor (9)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
In view of the recent experimental developments in ???^(0)? ? decay, and the fact that the Particle Data Group in the online edition of 2007 reports sizable changes of the radiative decay widths of vector mesons used as input in the theoretical [...]texto impreso
We improve the calculations of the ?????? decay within the context of meson chiral Lagrangians. We use a chiral unitary approach for [...]texto impreso
Starting from the chiral perturbation theory Lagrangian, but keeping different masses for the charged and neutral mesons (m_u ? m_d), and using a previously developed nonperturbative unitary scheme that generates the lightest meson-meson resonan[...]texto impreso
Llanes Estrada, Felipe José ; Oset, E. ; Sarkar, S. ; Vicente Vacas, M.J. ; Mateu, V. ; Hyodo, T. | World Scientific Publ Co Pte Ltd | 2005In this talk I look into three different topics, addressing first the possibility that the Theta(+) is a bound state of K pi N, exploiting the results of this study to find out the contribution of two meson and one baryon components in the baryo[...]texto impreso
A nonperturbative method which combines constraints from chiral symmetry breaking and coupled channel unitarity is used to describe the meson-meson interaction up to about 1.2 GeV. The approach uses the O(p_2) and O(p^4) chiral Lagrangians. The [...]texto impreso
Oller, J. A. ; Oset, E. ; Guerrero, F. ; Peláez Sagredo, José Ramón | Elsevier Science BV | 2000-01-31A non-perturbative method [1] which combines constraints from chiral symmetry breaking and coupled channel unitarity is used to describe meson-meson interactions up to ?stexto impreso
Llanes Estrada, Felipe José ; Oset, E. ; Mateu, V. ; Sarkar, S. ; Vicente Vacas, M.J. | World Scientific Publ Co Pte Ltd | 2004In this talk I look into three different topics, addressing first a method to determine the quantum numbers of the +, then exploiting the possibility that the + is a bound state of K N and in the third place I present results on a new resonant[...]texto impreso
Oset, E. ; Hosaka, A ; Nacher, J. C. ; Oka, M. ; Oller, J. A. ; Parreño, A. ; Peláez Sagredo, José Ramón ; Ramos, A. ; Toki, H. | Elsevier Science BV | 2000-01-31We report on recent progress on the chiral unitary approach, which is shown to have a much larger convergence radius than ordinary chiral perturbation theory, allowing one to reproduce data for meson meson interaction up to 1.2 GeV and meson bar[...]texto impreso
Llanes Estrada, Felipe José ; Peláez Sagredo, José Ramón ; Vicente Vacas, M. J. ; Oset, E. | Elsevier Science BV | 2005-06-13We study the self-energy of the SU(3) antidecuplet coming from two-meson virtual clouds. Assuming that the exotic Theta(+) belongs to an antidecuplet representation with (1710) as nucleon partner, we derive effective Lagrangians that describe t[...]
