Set invariant mass cut on Higgs bosons
Dear Developers,
I was curious whether it is possible to set a cut on the minimum invariant mass of multiple Higgs bosons as well.
For example, I am considering a process like 'u u~ > u u~ h h' in the SM and would like the invariant mass of the two Higgs bosons to be at least 1 TeV.
I had a look in the SubProcesses/cuts.f file and naively tried to add the following (just above the Durham cut, i.e. above line 560) :
C-- reset ptemp(0:3)
do j=0,3
ptemp(j)=0
enddo
C- sum over the momenta
do i=nincoming+
do j=0,3
enddo
enddo
C- Compute the invariant mass and check if its value against the chosen minimum value.
if(
endif
However, this is not compiling because "is_a_h()" is not defined ("Error: Function 'is_a_h' at (1) has no IMPLICIT type"). I was trying this since for jets, b quarks and photons, these functions exist.
My question therefore is, whether it is possible to add a function "is_a_h()" analogue to e.g. "is_a_b()" or "is_a_j()" and if so, how it should be implemented.
Thank you so much already in advance!
Cheers,
Patrick
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