The QCD rotator in the chiral limit

Details The QCD rotator in the chiral limit The QCD rotator in the chiral limit

2009-09-18

arxiv.org/abs/0909.3419v2

Nucl.Phys.B828:201-214,2010

Physics

High Energy Physics

High Energy Physics - Theory

17 pages; typos are corrected and a paragraph added for better understanding; the present version is identical with the publis

Scientific paper

10.1016/j.nuclphysb.2009.11.015

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.

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