S-Wave Heavy Quarkonium Spectra: Mass, Decays, and Transitions

Table 9

Charmonium leptonic decay widths (in keV). The widths calculated with and without QCD corrections are denoted by and .

	Power		Logarithmic		[13]		[15]		Exp. [43]
State
	3.435	1.277	3.154	1.173	11.8	6.60	6.847	2.536	5.55 0.14 0.02
(2S)	2.880	1.071	2.362	0.878	4.29	2.40	3.666	1.358	2.33 0.07
(3S)	2.153	0.800	1.888	0.702	2.53	1.42	2.597	0.962	0.86 0.07
(4S)	1.839	0.684	1.642	0.610	1.73	0.97	2.101	0.778	0.58 0.07
(5S)	1.590	0.591	1.551	0.576	1.25	0.70	1.710	0.633