2005/12/31 by TWQCD Collaboration, Ting-Wai Chiu, Tung‐Han Hsieh +1 · 2 citations
Physics and Astronomy · #Crystallography #Diquark #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.73.094510
published as Phys.Rev.D73:094510,2006 · 17 pages, 13 EPS figures, v3:reference added, accepted for publication in Physical Review D
arxiv created 2006/05/10 · openalex publication_date 2006/05/25 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the mass spectra of closed-charm mesons with JPC=1--, for hybrid charmonium, molecules, and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For two lattice volumes 243\ifmmode×\else\texttimes\fi48 and 203\ifmmode×\else\texttimes\fi40, each of 100 gauge configurations generated with single-plaquette action at \ensuremathβ=6.1, we compute point-to-point quark propagators and measure the time-correlation functions of these exotic meson operators. For the molecular operator (q\ensuremathγ5\ensuremathγic)(c\ensuremathγ5q)\ensuremath-(c\ensuremathγ5\ensuremathγiq)(q\ensuremathγ5c), it detects a resonance with mass around 4238\ifmmode±\else\textpm\fi31 MeV, which is naturally identified with Y(4260). Further, for any molecular and diquark-antidiquark operator, it detects heavier exotic charmed mesons, with (cscs) around 4450\ifmmode±\else\textpm\fi100 MeV, and (cccc) around 6400\ifmmode±\else\textpm\fi50 MeV.