Abstract
We calculate the coefficients of the dimension-8 quark and gluon condensates in the current-current correlator of 1−+ light hybrid current \( g\overline{q}(x){\gamma}_{\nu }i{G}_{\mu \nu }(x)q(x) \). With inclusion of these higher-power corrections and updating the input parameters, we re-analyze the mass of the 1−+ light hybrid meson from Monte-Carlo based QCD sum rules. Considering the possible violation of factorization of higher dimensional condensates and variation of 〈g3G3〉, we obtain a conservative mass range 1.72-2.60 GeV, which favors π1(2015) as a better hybrid candidate compared with π1(1600) and π1(1400).
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Huang, ZR., Jin, HY. & Zhang, ZF. New predictions on the mass of the 1−+ light hybrid meson from QCD sum rules. J. High Energ. Phys. 2015, 4 (2015). https://doi.org/10.1007/JHEP04(2015)004
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DOI: https://doi.org/10.1007/JHEP04(2015)004