The QCD rotator in the chiral limit
High Energy Physics - Theory
2010-03-25 v2 High Energy Physics - Lattice
Abstract
The low lying spectrum of QCD in the delta-regime is calculated here in chiral perturbation theory up to NNL order. The spectrum has a simple form in terms of the pion decay constant F and a combination of the low energy constants Lambda1 and Lambda2. Since measuring low lying stable masses is among the easiest numerical tasks, the results should help fixing these parameters to good precision.
Cite
@article{arxiv.0909.3419,
title = {The QCD rotator in the chiral limit},
author = {P. Hasenfratz},
journal= {arXiv preprint arXiv:0909.3419},
year = {2010}
}
Comments
17 pages; typos are corrected and a paragraph added for better understanding; the present version is identical with the published paper in N.Phys.B. except a typo in eq(35) which is also corrected here