2024/12/21 by Siyuan Li, Stéphan Narison, Li, Siyuan +5
Physics and Astronomy · #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #High-Energy Particle Collisions Research
paper · pdf · doi:10.48550/arxiv.2412.16692
We improve the determination of the mass and coupling of the 2++ tensor di-gluonium by using relativistic QCD Laplace sum rules (LSR). In so doing, we evaluate the next-to-leading order (NLO) corrections to the perturbative (PT) and ⟨ αs G2 ⟩ condensate and the lowest order (LO) ⟨ G3 ⟩ contributions to the 2++ di-gluonium two-point correlator. Within a vacuum saturation estimate (kG=1) of the dimension-eight gluon condensates, we obtain: MT=3028(287)MeV and the renormalization group invariant (RGI) coupling fT=224(33)MeV. Assuming that the factorization hypothesis can be violated, we study the effect of the violation factor kG on the results and obtain: MT=3188(337)MeV and fT=245(32)MeV for kG=(3± 2). Our estimation does not favour the interpretation of the observed f2(2010), f2(2300) and f2(2340) as pure glueball state.