Mass Spectra and Decay Constants of Heavy-Light Mesons: A Case Study of QCD Sum Rules and Quark Model

Table 2

Pseudoscalar and vector decay constants of heavy-light mesons in MeV. QM denotes quark model and SR denotes sum rule calculations.

Meson	Exp.	QM	SR	[9]	[16]	[53]
	206 8.9	199	210.25 11.60	205.14	206.2 7.3 5.1	207.53
	249	253	245.70 7.46	241.84	245.3 15.7 4.5	262.56
	204 31	209	223.45 12.4	201.09	193.4 12.3 4.3	208.13
		275	277.22 11	292.04	232.5 18.6 2.4	262.39