2009/05/21 by Mushtaq Loan, Zhihuan Luo, Zhi-Huan Luo +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat
paper · pdf · doi:10.1016/j.nuclphysb.2009.05.008
published as Nucl.Phys.B820:89-98,2009 · 6 pages, 5 figures
openalex publication_date 2009/05/21 · arxiv created 2009/07/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present a search for the possible I(JP)=0(2+) tetraquark state with ss s s quark content in quenched improved anisotropic lattice QCD. Using various local and non-local interpolating fields we determine the energies of ground-state and second ground state using variational method. The state is found to be consistent with two-particle scattering state, which is checked to exhibit the expected volume dependence of the spectral weights. In the physical limit, we obtain for the ground state, a mass of 2123(33)(58) MeV which is higher than the mass of experimentally observed f(2010). The lattice resonance signal obtained in the physical region does not support a localized JP =2+ tetraquark state in the pion mass region of 300 - 800 MeV. We conclude that the 4q system in question appears as a two-particle scattering state in the quark mass region explored here.