In a recent paper review, the question came up how many resonances there are which decay into two kaons. It is not easy to look this up somewhere. My solution was to extract the information in the following way from the Pythia8 decay database. I have to first get the database, which is in XML format. I parse the XML database and then go through all entries and isolate the particles which exclusively decay into two kaons.
The plot shows where the resonances are located in the invariant mass distribution. The y-axis has no meaning, it just separates the points vertically.
And here is a sorted list of the masses.
a_0(980)0 983.5
f_0(980) 1000.0
phi 1019.46
f_2 1275.1
a_20 1318.3
f_0(1370) 1350.0
a_0(1450)0 1474.0
f'_2(1525) 1525.0
f_0(1710) 1720.0
rho(1700)0 1720.0
D0 1864.86
chi_0c 3414.75
chi_2c 3556.2
psi(2S) 3686.11
B0 5279.58
B_s0 5366.7699999999995