In this paper, we re-analyze the 1−+ and 0++ light hybrids from QCD sum rules with a Monte-Carlo based uncertainty analysis. With 30% uncertainties in the accepted central values for QCD condensates and other input parameters, we obtain a prediction on 1−+ hybrid mass of 1.71±0.22\,GeV, which covers the mass of π1(1600). However, the 0++ hybrid mass prediction is more than 4\,GeV, which is far away from any known a0 meson. We also study the correlations between the input and output parameters of QCD sum rules.
@article{arxiv.1312.5432,
title = {Revisiting $1^{-+}$ and $0^{++}$ light hybrids from Monte-Carlo based QCD sum rules},
author = {Zhu-feng Zhang and Hong-ying Jin and T. G. Steele},
journal= {arXiv preprint arXiv:1312.5432},
year = {2015}
}