%0 Journal Article
%T Large-N-c naturalness in coupled-channel meson-meson scattering
%A Ledwig, T.
%A Nieves, J.
%A Pich, A.
%A Ruiz Arriola, E.
%A Ruiz de Elvira, J.
%J Physical Review D
%D 2014
%V 90
%N 11
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Ledwig_etal2014
%O WOS:000348730800008
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2100), last updated on Thu, 26 Feb 2015 17:05:02 +0000
%X The analysis of hadronic interactions with effective field theory techniques is complicated by the appearance of a large number of low-energy constants, which are usually fitted to data. On the other hand, the large-N-c limit helps to impose natural short-distance constraints on these low-energy constants, providing a parameter reduction. A Bayesian interpretation of the expected 1/N-c accuracy allows for an easy and efficient implementation of these constraints, using an augmented chi(2). We apply this approach to the analysis of meson-meson scattering, in conjunction with chiral perturbation theory to one loop and coupled-channel unitarity, and show that it helps to largely reduce the many existing ambiguities and simultaneously provide an acceptable description of the available phase shifts.
%R 10.1103/PhysRevD.90.114020
%U http://arxiv.org/abs/1407.3750
%U https://doi.org/10.1103/PhysRevD.90.114020
%P 114020-17pp