### Impacto

### Downloads

Downloads per month over past year

Dobado González, Antonio and Peláez Sagredo, José Ramón
(1997)
*Inverse amplitude method in chiral perturbation theory.*
Physical Review D , 56
(5).
pp. 3057-3073.
ISSN 0556-2821

Preview |
PDF
508kB |

Official URL: http://prd.aps.org/abstract/PRD/v56/i5/p3057_1

## Abstract

Based on a dispersive approach, we apply the inverse amplitude method to unitarize one-loop SU(2) and SU(3) chiral perturbation theory. Numerically, we find that this unitarization technique yields the correct complex analytic structure in terms of cuts and poles. Indeed, using the chiral parameter estimates obtained from low-energy experiments we obtain the poles associated with the p(770) and K*(982) resonances. Just by fixing their actual masses we obtain a parametrization of the pi pi and pi K phase shifts in eight different channels. With this fit we have then calculated several low-energy phenomenological parameters estimating their errors. Among others, we have obtained the chiral parameters and scattering lengths, which can be relevant for future experiments.

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

Additional Information: | © 1997 The American Physical Society. |

Uncontrolled Keywords: | Symmetry-Breaking Sector, Pi-Pi Scattering, One-Loop, Gev-C, Equivalence Theorem, Weak-Interactions, Standard Model, K Scattering, Momentum-Transfer, 1/N Expansion |

Subjects: | Sciences > Physics |

ID Code: | 22750 |

Deposited On: | 11 Sep 2013 14:17 |

Last Modified: | 12 Nov 2014 12:51 |

### Origin of downloads

Repository Staff Only: item control page