arXiv:hep-lat/0209092·v1·High Energy Physics — Lattice
A lattice estimate of the g_{D^* D pi} coupling
A. Abada🇫🇷 · D. Becirevic🇮🇹 · Ph. Boucaud🇫🇷 · G. Herdoiza🇫🇷 · J.P. Leroy🇫🇷 · A. Le Yaouanc🇫🇷 · O. Pene🇫🇷 · J. Rodriguez-Quintero🇪🇸
Abstract
We present the results of the first direct determination of the g_{D^* D pi} coupling using lattice QCD. From our simulations in the quenched approximation, we obtain g_{D^* D pi} = 18.8 +/- 2.3^{+1.1}_{-2.0} and hat(g) = 0.67 +/- 0.08^{+0.04}_{-0.06}. It is in agreement with a recent experimental result from CLEO.
Comments: Lattice2002(heavyquark), 3 pages, 3 figures