A lattice estimate of the g_{D^* D pi} coupling

Details A lattice estimate of the g_{D^* D pi} coupling A lattice estimate of the g_{D^* D pi} coupling

2002-09-09

arxiv.org/abs/hep-lat/0209092v1

Nucl.Phys.Proc.Suppl.119:641-643,2003

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2002(heavyquark), 3 pages, 3 figures

Scientific paper

10.1016/S0920-5632(03)01611-6

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.

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