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Nature of the f_0(600) scalar meson from its N_c dependence at two loops in unitarized chiral perturbation theory

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Peláez Sagredo, José Ramón and Ríos, R. (2006) Nature of the f_0(600) scalar meson from its N_c dependence at two loops in unitarized chiral perturbation theory. Physical review letters, 97 (24). ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.97.242002


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Abstract

By using unitarized two-loop chiral perturbation theory partial waves to describe pion-pion scattering we find that the dominant component of the lightest scalar meson does not follow the q q̅ dependence on the number of colors that, in contrast, is obeyed by the lightest vectors. The method suggests that a subdominant q q̅ component of the f_0(600) possibly originates around 1 GeV.


Item Type:Article
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©2006 The American Physical Society.

Uncontrolled Keywords:π π-scattering; Multi-quark hadrons; Low-energy; Form-factors; Phase-shift; Sigma; Lagrangians; Amplitude; Light; Resonances
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Mathematical physics
ID Code:35357
Deposited On:28 Jan 2016 19:01
Last Modified:10 Dec 2018 15:09

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