Charmonium Properties Using the Discrete Variable Representation (DVR) Method

Table 4

Leptonic decay widths (in keV).

State	Present	Exp [6]	[59]	[60]	[65]	[10]
	4.979		3.623	2.925	1.8532	6.60
(2S)	2.137		1.085	1.533	0.5983	2.40
(3S)	1.460		0.748	1.091	0.3812	1.42
(4S)	1.131		0.599	0.856	0.2847	0.97
(5S)	0.930		0.508	0.707	0.2286	0.70