2++ Light Tensor Hybrid Meson from QCD Laplace Sum Rules

Authors

• Jason N.E. Ho, Dordt UniversityFollow
• Robert Kleiv
• Siyuan Lee
• Stephan Narison
• Tom Steele
• Davidson Rabetiarivony

Document Type

Article

Publication Date

8-2026

Department

Engineering

Keywords

QCD spectral sum rules, hybrid mesons, meson decay constants, light quark masses, chiral symmetry

Abstract

We present an analysis of the light tensor (𝐽𝑃𝐶 = 2++) hybrid meson mass and coupling from QCD Laplace Sum Rules where the next-to-leading order (NLO) perturbative (PT) corrections and the contributions of the nonperturbative (NP) condensates up to dimension-six (𝐷 = 6) are included. NLO leading-logarithms corrections due to the condensates which contribute in the chiral limit are considered. We obtain the mass 𝑀2+ = (2038 ± 190) MeV and a relatively small coupling 𝑓2+ = (10.5 ± 2.9) MeV normalized as 𝑓𝜋 = 93 MeV. Our results suggest that the 𝑓2(1950) or/and the 𝑓′ 2 (2010) may have a sizeable ̄𝑞𝑞𝑔 hybrid component. We also compute the tensor hybrid topological charge (value of the two-point function at zero momentum) and find (for the first time) at NLO: Π𝑞𝑔(0) = (2.41 ± 0.43) × 10−4 GeV6 which could be checked from some lattice QCD or/and low energy theorems (LET).

Comments

Published in Physics Letters B

2 ++ Light Tensor Hybrid Meson from QCD Laplace Sum Rules

Source Publication Title

Physics Letters B

Publisher

Elsevier

Volume

879

First Page

140548

DOI

https://doi.org/10.1016/j.physletb.2026.140548

Recommended Citation

Ho, J. N., Kleiv, R., Lee, S., Narison, S., Steele, T., & Rabetiarivony, D. (2026). 2++ Light Tensor Hybrid Meson from QCD Laplace Sum Rules. Physics Letters B, 879, 140548. https://doi.org/https://doi.org/10.1016/j.physletb.2026.140548