Información del autor
Documentos disponibles escritos por este autor (121)
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
The series of workshops on New Partial-Wave Analysis Tools for Next-Generation Hadron Spectroscopy Experiments was initiated with the ATHOS 2012 meeting, which took place in Camogli, Italy, June 20-22, 2012. It was followed by ATHOS 2013 in Klos[...]texto impreso
Dobado González, Antonio ; Peláez Sagredo, José Ramón ; Urdiales, M.T. | American Physical Society | 1997-12-01In this work we study the applicability of the equivalence theorem, either for unitary models or within an effective Lagrangian approach. There are two types of limitations: the existence of a validity energy window and the use of the lowest ord[...]texto impreso
Dobado González, Antonio ; Herrero, M. J. ; Peláez Sagredo, José Ramón ; Morales, E.R. | American Physical Society | 2000-09-01We present a unified analysis of the two main production processes of vector boson pairs at the CERN LHC, VV-fusion and q (q) over bar annihilation, in a minimal strongly interacting electroweak symmetry breaking sector. Using a unitarized elect[...]texto impreso
We present a model independent study of the chiral condensate evolution in a hadronic gas, in terms of temperature and baryon chemical potential. The meson- eson interactions are described within chiral perturbation theory and the pion-nucleon [...]texto impreso
We study the dependence of the ? ? scattering phase shifts on the light quark mass in both standard and unitarized SU(2) Chiral Perturbation Theory (ChPT) to one and two loops. We then use unitarized SU(3) ChPT to study the elastic f_0(600), k(8[...]texto impreso
We study the pion mass dependence of the ?(770) and f_0(600) masses and widths from one and two-loop unitarized chiral perturbation theory ( ChPT). We show the consistency of one-loop calculations with lattice results for the M_?, f_? and the is[...]texto impreso
We calculate the pion-pion elastic scattering phase shifts for pion masses from the chiral limit to values of interest for lattice studies. At low energies, we use the standard Chiral Perturbation Theory expressions to one and two loops. In addi[...]texto impreso
Rios, G. ; Gómez Nicola, Ángel ; Hanhart, C. ; Peláez Sagredo, José Ramón | Amer Inst Physics | 2008We review our recent study of the pion mass dependence of the p and a resonances, generated from one-loop SU(2) Chiral Perturbation Theory (ChPT) with the Inverse Amplitude Method (IAM). In order to properly account for the Adler zero region, we[...]texto impreso
Llanes Estrada, Felipe José ; Peláez Sagredo, José Ramón ; Gómez Nicola, Ángel | World Scientific Publ Co Pte Ltd | 2005We review our recent work on thermal meson proper-ties within the Chiral Perturbation Theory framework. We will focus on the pion electromagnetic form factor, stressing its importance for Relativistic Heavy Ion Collisions. We obtain model-indepe[...]texto impreso
Within chiral perturbation theory, we study elastic pion scattering in the I=0,J=2, channel, whose main features are the f(1270) resonance and the vanishing of the lowest order. By means of a chiral model that includes an explicit resonance coup[...]texto impreso
Peláez Sagredo, José Ramón ; Pennington, M. R. ; Ruiz de Elvira, Jacobo ; Wilson, D. J. | Amer Physical Soc | 2011-11-09The leading 1=N_c behavior of unitarized chiral perturbation theory distinguishes the nature of the ? and the : The is a qq? meson, while the ? is not. However, semilocal duality between resonances and Regge behavior cannot be satisfied for lar[...]texto impreso
In this work we study the thermodynamic properties of the pion gas starting from the realistic elastic scattering phase shifts obtained from chiral perturbation theory and using the virial expansion. In particular we study the equation of state [...]texto impreso
We review our recent one-loop calculation of all the two meson scattering amplitudes within SU(3) Chiral Perturbation Theory, i.e. with pions, kaons and etas. By unitarizing these amplitudes we are able to generate dynamically the lightest reson[...]texto impreso
We review our evaluation of forward dispersion relations for direct fits to the different, and often conflicting, ?? scattering experimental analyses. We find that some of the most commonly used data sets do not satisfy these constraints by seve[...]
