Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-08-30
Physics
High Energy Physics
High Energy Physics - Phenomenology
Proceedings XIV International Conference on Hadron Spectroscopy (hadron2011), 13-17 June 2011, Munich, Germany
Scientific paper
We report on our recent results in the study of the chiral extrapolation of the phase-shifts in elastic pion-pion scattering, using both standard and unitarized ChPT to one and two loops. In the standard ChPT approach, limited to low momenta, we study the S, P and D waves. Unitarization extends the analysis to energies of around 1 GeV, being compatible with standard ChPT at low energies for the S and P waves. We then compare with lattice results and find a good agreement of standard ChPT below p \sim 200 MeV for the I=2, J=0 and I=1, J=1 channels and up to p \sim 500 MeV for the I=2, J=2 channel. Unitarized ChPT improves the agreement in the scalar and vector channels at higher energies. We have also performed a Montecarlo analysis to provide an estimation of the uncertainties.
Nebreda J.
Pelaez Jose Ramon
Rios Guillermo
No associations
LandOfFree
Mass dependence of pion-pion phase shifts within standard and unitarized ChPT versus Lattice results does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Mass dependence of pion-pion phase shifts within standard and unitarized ChPT versus Lattice results, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mass dependence of pion-pion phase shifts within standard and unitarized ChPT versus Lattice results will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-729073