Speaker
Jose Pelaez
(Universidad Complutense de Madrid)
Description
In this work we study the dependence of the f0(600) meson with
respect to variations
of the light quark masses. THis is achieved by means of
unitarized Chiral
Perturbation Theory, which is known to provide a remarkable
description of
meson-meson interactions below 1.2 GeV, compatible with the
standard Chiral
Perturbation Theory expansion at low energies. The latter
provides the correct
dependence on the quark masses dictated by QCD. The interest of
these results is to
bridege the gap with lattice studies of scalar mesons, which
generically contain
large quark masses in their calculations. As a spin-off, it has
some interest in the
discussion on Anthropic constraints on quark masses.
Primary author
Jose Pelaez
(Universidad Complutense de Madrid)
