Search for the S=+1 pentaquarks in quenched lattice QCD
| dc.creator | Takahashi, Toru T. | |
| dc.creator | Umeda, Takashi | |
| dc.creator | Onogi, Tetsuya | |
| dc.creator | Kunihiro, Teiji | |
| dc.date | 2005-09-27 | |
| dc.date.accessioned | 2026-07-07T06:22:59Z | |
| dc.date.available | 2026-07-07T06:22:59Z | |
| dc.description | We study spin $\frac12$ hadronic states in quenched lattice QCD to search for a possible $S=+1$ pentaquark resonance. Our work is the first systematic lattice QCD study which properly carries out the following analyses: {\it (1) the careful extraction of the first two low energy states with very high statistics and the variational method} and {\it (2) the study of volume dependences of eigenenergies and spectral weights to distinguish resonance states from scattering states}. Simulations are carried out on $8^3\times 24$, $10^3\times 24$, $12^3\times 24$ and $16^3\times 24$ lattices at $β$=5.7 with the standard plaquette gauge action and the Wilson quark action. Our result indicates the existence of a resonance state lying slightly above the NK threshold in $(I,J^P)=(0,\frac12^-)$ channel in quenched QCD. | |
| dc.description | Talk presented at the 23rd International Symposium on Lattice Field Theory "Lattice2005", Dublin, July 25-30, 2005; uses PoS.cls | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0509148 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0509148 | |
| dc.identifier | PoS LAT2005 (2005) 071 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/96084 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Search for the S=+1 pentaquarks in quenched lattice QCD | |
| dc.type | text |