Larger cross section if final states decay
Asked by
Fran Arco
I am studing the process e+ e- > h h vl vl~ in the SM and the same process but with the decay of the final Higgs bosons to b bbar. Surprisingly, madgraph says that the cross section with both h going to b bar is larger than the production without decay. For example, for sqrt(s)=1000GeV I obtain:
(1) 9.8e-5 pb for e+ e- > h h vl vl~
(2) 6.6e-5 pb for e+ e- > h h vl vl~, h > b b~
It makes no sense and I have no clue why this happens!
Thanks in advance for the help.
Fran
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