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Rios, G. and Hanhart, Christoph and Peláez Sagredo, José Ramón (2011) m_π and N_c dependence of rho and σ mesons from unitarized chiral perturbation theory. In IX International Conference on Quark Confinement and the Hadron Spectrum (QCHS IX). AIP Conference Proceedings (1343). American Institute of Physics. ISBN 978-0-7354-0899-9
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Official URL: http://dx.doi.org/10.1063/1.3575125
Abstract
We review the N_c and m_π dependence of the rho(770) and σ (or f_0(600) resonances generated with the Inverse Amplitude Method. The σ N_c behavior is at odds with being dominantly a q̅q̅ state, but there is a hint of a subdominant q̅q̅o component with a mass above 1 GeV. We find fair agreement with lattice results for the chiral extrapolation of the ρ mass, and that the ρ π π coupling is almost m_π independent whereas the σ π π depends strongly on m_π.
| Item Type: | Book Section |
|---|---|
| Additional Information: | ISSN: 0094-243X |
| Uncontrolled Keywords: | Scalar mesons; Chiral Lagrangian, 1/Nc expansion |
| Subjects: | Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics |
| ID Code: | 35024 |
| Deposited On: | 20 Jan 2016 17:11 |
| Last Modified: | 10 Dec 2018 15:09 |
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