### Impacto

### Downloads

Downloads per month over past year

Nebreda Manjón, Jenifer and Peláez Sagredo, José Ramón
(2010)
*f_(600), ρ(800), ρ(770) and K*(892), quark mass dependence from unitarized SU(3) Chiral Perturbation Theory.*
AIP conference proceedings, 1257
(5).
ISSN 0094-243X

Preview |
PDF
333kB |

Official URL: http://dx.doi.org/10.1063/1.3483380

## Abstract

We study the strange and non-strange quark mass dependence of the parameters of the f_0(600), κ(800), ρ(770) and K*(892) resonances generated from elastic meson-meson scattering using unitarized one-loop Chiral Perturbation Theory. We fit simultaneously all experimental scattering data up to 0.8-1 GeV together ith lattice results on decay constants and scattering lengths up to a pion mass of 440 MeV. Then, the strange and non-strange quark masses are varied from the chiral limit up to values of interest for lattice studies. In these amplitudes, the mass and width of the ρ(770) and K* (892) present a similar and smooth quark mass dependence. In contrast, both scalars present a similar non-analyticity at high quark masses. Nevertheless the f_0(600) dependence on both quark masses is stronger than for the к(800) and the vectors. We also confirm the lattice assumption of quark mass independence of the vector two-meson coupling that, in contrast, is violated for scalars

Item Type: | Article |
---|---|

Additional Information: | ©American Institute of Physics. |

Subjects: | Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics |

ID Code: | 35133 |

Deposited On: | 21 Jan 2016 17:39 |

Last Modified: | 10 Dec 2018 15:09 |

### Origin of downloads

Repository Staff Only: item control page