Hadronic decay of a vector meson from the lattice
| dc.creator | UKQCD Collaboration | |
| dc.creator | McNeile, C. | |
| dc.creator | Michael, C. | |
| dc.date | 2002-12-13 | |
| dc.date | 2003-02-04 | |
| dc.date.accessioned | 2026-07-07T11:47:08Z | |
| dc.date.available | 2026-07-07T11:47:08Z | |
| dc.description | We explore the decay of a vector meson to two pseudoscalar mesons on the lattice with $N_f=2$ flavours of sea quark. Although we are working with quark masses that do not allow a physical decay, we show how the transition rate can be evaluated from the amplitude for $ρ\to ππ$ and from the annihilation component of $ππ\to ππ$. We explore the decay amplitude for two different pion momenta and find consistent results. The coupling strength we find is in agreement with experiment. We also find evidence for a shift in the $ρ$ mass caused by mixing with two pion states. | |
| dc.description | 13 pages, version as accepted for Physics Letters B | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0212020 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0212020 | |
| dc.identifier | Phys.Lett.B556:177-184,2003 | |
| dc.identifier | doi:10.1016/S0370-2693(03)00130-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202465 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Hadronic decay of a vector meson from the lattice | |
| dc.type | text |