Branching ratios R(2S) and R(1D)
R = Γ(D
s
-->D
*
K)/Γ(D
s
-->DK)
contribution
R(2S)
R(1D)
couplings
(5/18)/(5/72)=
4
(1/72)/(1/72)=
1
phase space
1.70
0.43
mass factors
1.83
0.46
damping
2.81
0.70
Some mixing brings R(2S) down and R(1D) up.
BaBar PRD80,092003 (2009): 0.91±0.13±0.12
Couplings from Z.Phys.C21,291 (1984).
Damping from Phys.Rev.D80,074001 (2009).