Y(4260) on the lattice
| dc.creator | TWQCD Collaboration | |
| dc.creator | Chiu, Ting-Wai | |
| dc.creator | Hsieh, Tung-Han | |
| dc.date | 2005-12-21 | |
| dc.date | 2006-05-10 | |
| dc.date.accessioned | 2026-07-07T10:28:43Z | |
| dc.date.available | 2026-07-07T10:28:43Z | |
| dc.description | We investigate the mass spectra of closed-charm mesons with $ J^{PC} = 1^{--} $, for hybrid charmonium, molecules, and diquark-antidiquark operators, in quenched lattice QCD with exact chiral symmetry. For two lattice volumes $ 24^3 \times 48 $ and $ 20^3 \times 40 $, each of 100 gauge configurations generated with single-plaquette action at $ β= 6.1 $, we compute point-to-point quark propagators and measure the time-correlation functions of these exotic meson operators. For the molecular operator $ \{(\qbarγ_5γ_i\c)(\cbarγ_5\q)- (\cbarγ_5γ_i\q)(\qbarγ_5\c) \} $, it detects a resonance with mass around $ 4238 \pm 31 $ MeV, which is naturally identified with $ Y(4260) $. Further, for any molecular and diquark-antidiquark operator, it detects heavier exotic charmed mesons, with quark content $ (\c\s\cbar\sbar) $ around $ 4450 \pm 100 $ MeV, and $ (\c\c\cbar\cbar) $ around $ 6400 \pm 50 $ MeV. | |
| dc.description | 17 pages, 13 EPS figures, v3:reference added, accepted for publication in Physical Review D | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0512029 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0512029 | |
| dc.identifier | Phys.Rev.D73:094510,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.73.094510 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177547 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Y(4260) on the lattice | |
| dc.type | text |