Determination of B*B pi coupling in unquenched QCD
| dc.creator | Ohki, Hiroshi | |
| dc.creator | Matsufuru, Hideo | |
| dc.creator | Onogi, Tetsuya | |
| dc.date | 2008-02-12 | |
| dc.date.accessioned | 2026-07-07T11:40:15Z | |
| dc.date.available | 2026-07-07T11:40:15Z | |
| dc.description | The $B^* Bπ$ coupling is a fundamental parameter of chiral effective Lagrangian with heavy-light mesons and can constrain the chiral behavior of $f_B$, $B_B$ and the $B\to πl ν$ form factor in the soft pion limit. We compute the $B^* B π$ coupling with the static heavy quark and the $O(a)$-improved Wilson light quark. Simulations are carried out with $n_f=2$ unquenched $12^3\times 24$ lattices at $β=1.80$ and $16^3\times 32$ lattices at $β=1.95$ generated by CP-PACS collaboration. To improve the statistical accuracy, we employ the all-to-all propagator technique and the static quark action with smeared temporal link variables following the quenched study by Negishi {\it et al.}. These methods successfully work also on unquenched lattices, and determine the $B^*Bπ$ coupling with 1--2% statistical accuracy on each lattice spacing. | |
| dc.description | 19pages,26figures | |
| dc.identifier | https://arxiv.org/abs/0802.1563 | |
| dc.identifier | http://arxiv.org/abs/0802.1563 | |
| dc.identifier | Phys.Rev.D77:094509,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.77.094509 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200200 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Determination of B*B pi coupling in unquenched QCD | |
| dc.type | text |