Impacto
Downloads
Downloads per month over past year
Nebreda Manjón, Jenifer and Peláez Sagredo, José Ramón and Rios, G. (2011) Chiral extrapolation of pion-pion scattering phase shifts within standard and unitarized Chiral Perturbation Theory. Physical review D, 83 (9). ISSN 1550-7998
Preview |
PDF
771kB |
Official URL: http://dx.doi.org/10.1103/PhysRevD.83.094011
Abstract
We calculate the pion-pion elastic scattering phase shifts for pion masses from the chiral limit to values of interest for lattice studies. At low energies, we use the standard Chiral Perturbation Theory expressions to one and two loops. In addition, we study the phase shifts' mass dependence in the resonance region by means of dispersion theory in the form of unitarized Chiral Perturbation Theory and the inverse amplitude method. We pay particular attention to the case when resonances are close to threshold, illustrating the different behavior between scalar and vector resonances. We also provide the estimation of uncertainties, which are dominated by those of the O[p^(6)] chiral parameters.
Item Type: | Article |
---|---|
Additional Information: | ©2011 American Physical Society. |
Uncontrolled Keywords: | Gev-c; Polarized target; High statistics; Light scalars; Spin-1 fields; Low-energy; Mass; Lagrangians; Decays; π&π |
Subjects: | Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics |
ID Code: | 35007 |
Deposited On: | 14 Jan 2016 16:20 |
Last Modified: | 10 Dec 2018 15:09 |
Origin of downloads
Repository Staff Only: item control page