BR and madspin decay
Hi
I am trying to generate events for process gg<H<hh<bbbb, with commands, generate gg<H<hh [QCD] using 2hdmtII_nlo and then decaying h to bb using madspin. Before I was getting a very small cross-section after madspin decay, so now I am specifying the decay widths and BR in the parameter card :
DECAY 25 4.22511644e-03 # Wh1
# BR NDA ID1 ID2
DECAY 35 1.17027585e+01 # Wh2
# BR NDA ID1 ID2
The cross-section seems to be in the magnitude we expect it to be if we calculate sigma(gg>
CRITICAL: Branching ratio larger than one for 25
What could be the reason behind that, do I need to define the BRs in some other format>
Any help would be much appreciated.
Thanks
Shubhani
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