2 papers
hep-ph2013
Determination of Chiral Perturbarion Theory low energy constants from a precise description of pi-pi scattering threshold parameters
Guillermo Rios, Jenifer Nebreda, Jose R. Pelaez
We report on our determination of the values of the one and two loop low energy constants appearing in the Chiral Perturbation Theory calculation of the pi-pi scattering amplitude.…
hep-ph2012
Enhanced non-quark-antiquark and non-gluebal N_c behavior of light scalar mesons
Guillermo Rios, Jenifer Nebreda, Jose R. Pelaez
We report our results on the nature of the lightest scalar resonances, where we show that a quark-antiquark or glueball interpretation of the scalars f_0(600) and K^*_0(800) requir…