Full CKM matrix with lattice QCD
| dc.creator | Okamoto, Masataka | |
| dc.date | 2004-12-29 | |
| dc.date.accessioned | 2026-07-07T03:39:15Z | |
| dc.date.available | 2026-07-07T03:39:15Z | |
| dc.description | We show that it is now possible to fully determine the CKM matrix, for the first time, using lattice QCD. |V_{cd}|, |V_{cs}|, |V_{ub}|, |V_{cb}| and |V_{us}| are, respectively, directly determined with our lattice results for form factors of semileptonic D->pi l nu, D->K l nu, B->pi l nu, B->D l nu, and K->pi l nu decays. The error from the quenched approximation is removed by using the MILC unquenched lattice gauge configurations, where the effect of u,d and s quarks is included. The error from the ``chiral'' extrapolation (m_l->m_{ud}) is greatly reduced by using improved staggered quarks. The accuracy is comparable to that of the Particle Data Group averages. In addition, |V_{ud}|, |V_{tb}|, |V_{ts}| and |V_{td}| are determined by using unitarity of the CKM matrix and the experimental result for sin{(2beta)}. In this way, we obtain all 9 CKM matrix elements, where the only theoretical input is lattice QCD. We also obtain all the Wolfenstein parameters, for the first time, using lattice QCD. | |
| dc.description | 7 pages, 2 figures. Based on an invited talk given at FPCP04 conference in Daegu (Korea). Additional result/analysis included to complete the full CKM matrix | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0412044 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0412044 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/38849 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Full CKM matrix with lattice QCD | |
| dc.type | text |