QCD Laplace Sum Rules and the Π(1300) Resonance
T. G. Steele, J. C. Breckenridge, M. Benmerrouche, V. Elias, A. H. Fariborz
Abstract
A global fit to the shape of the first QCD Laplace sum rule exhibiting sensitivity to pion-resonance [Π(1300)] parameters is performed, leading to predictions for the pion-resonance mass and decay constant. This fit leads to predictions of Mπ = 1.15 0.15 GeV for the pion-resonance mass, and Fπ2=(4.5 2.1).(fπ2mπ4/Mπ4) for the pion-resonance decay constant.
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