Publications
Publication Information
Title | Coupled pipi,KK scattering in P-wave and the rho resonance from lattice QCD |
Authors | David Wilson, Raul Briceno, Jozef Dudek, Robert Edwards, Christopher Thomas |
JLAB number | JLAB-THY-15-2101 |
LANL number | arXiv:1507.02599 |
Other number | DOE/OR/23177-3465 |
Document Type(s) | (Journal Article) |
Associated with EIC: | No |
Supported by Jefferson Lab LDRD Funding: | No |
Journal Compiled for Physical Review D Volume 92 Issue 09 Page(s) 094502 Refereed | |
Publication Abstract: | We determine elastic and coupled-channel amplitudes for isospin-1 meson-meson scattering in P-wave, by calculating correlation functions using lattice QCD with light quark masses such that mpi = 236 MeV in a cubic volume of ~ (4 fm)^3 . Variational analyses of large matrices of correlation functions computed using operator constructions resembling pipi, KKbar and qqbar, in several moving frames and several lattice irreducible representations, leads to discrete energy spectra from which scattering amplitudes are extracted. In the elastic pipi scattering region we obtain a detailed energy- dependence for the phase-shift, corresponding to a rho resonance, and we extend the analysis into the coupled-channel KKbar region for the first time, finding a small coupling between the channels. |
Experiment Numbers: | other |
Group: | THEORY CENTER |
Document: | |
DOI: | http://dx.doi.org/10.1103/PhysRevD.92.094502 |
Accepted Manuscript: | |
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