New predictions on the mass of the 1^-+ light hybrid meson from QCD sum rules

2014/11/09 by Zhuo-Ran Huang, Huang, Zhuo-Ran, Hong-Ying Jin +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1411.2224

openalex publication_date 2014/11/09 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28

Abstract

We calculate the coefficients of the dimension-8 quark and gluon condensates in the current-current correlator of 1^-+ light hybrid current gq(x)γ_νiG_μν(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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