> Details

Hanhart, Chr. [Author]; Pelaez, J. R. [Author]; Rios, G. [Author]

Quark mass dependence of the rho and sigma from dispersion relations and Chiral Perturbation Theory

Reference
management

Bookmarks

Remove from
bookmarks

Share this on Whatsapp

Close

Bookmarks



You can manage bookmarks using lists, please log in to your user account for this.
  • Media type: E-Article
  • Title: Quark mass dependence of the rho and sigma from dispersion relations and Chiral Perturbation Theory
  • Contributor: Hanhart, Chr. [Author]; Pelaez, J. R. [Author]; Rios, G. [Author]
  • imprint: APS, 2008
  • Published in: Physical review letters 100, 152001 (2008). doi:10.1103/PhysRevLett.100.152001
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevLett.100.152001
  • ISSN: 0031-9007
  • Keywords: mass dependence ; perturbation theory: chiral ; quark: mass ; pi p: scattering amplitude ; coupling constant: (rho(770) 2pi) ; numerical calculations ; rho(770): mass ; pi: mass ; f0(600): mass ; dispersion relation
  • Origination:
  • Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
  • Description: We use the one-loop chiral perturbation theory pi pi-scattering amplitude and dispersion theory in the form of the inverse amplitude method to study the quark-mass dependence of the two lightest resonances of the strong interactions, the f(0)(600) (sigma) and the rho meson. As the main results, we find that the rho pi pi coupling constant is almost quark mass independent and that the rho mass shows a smooth quark-mass dependence while that of the sigma shows a strong nonanalyticity. These findings are important for studies of the meson spectrum on the lattice.
  • Access State: Open Access