WIP: Add HiddenValley decay files for various modes
Please do not merge this yet. Various checks to be done, namely, review generator and simulation physics output.
Add new HiddenValley decay files, for various HV pion final states:
dkfiles/HiddenValley_HiggsPortal_KK_1.02GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_KK_1.08GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_KK_1.3GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_KK_1.8GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_KK_2.5GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_mumu_0.3GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_mumu_0.9GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_pipi_0.4GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_pipi_0.6GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_pipi_0.8GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_pipi_0.95GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_ssbar_1.8GeV_5ps.dec
dkfiles/HiddenValley_HiggsPortal_ssbar_2.5GeV_5ps.dec