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Run3 bbH cards for producing bbHToGG samples #3774

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@nitishkumarkv nitishkumarkv commented Oct 8, 2024

Dear experts,

I have added the bbH cards for yb2, ybyt and yt2 contributions. The cards are a copy from Run2 but only the beam energy is changed to 6800.0 GeV. I assume decay products should be defined in the fragment file.

For the yb2 contribution, I unpacked one of the gridpacks of bbHToTauTau_yb2 samples and I found the proc_card (in folder process/Cards/proc_card_mg5.dat) matching with SUSYGluGluToBBH process card. But there are also separate cards for 2017 bbH_4FS_yb2. Please let me know which one should be used.

Please review the cards and mention any changes if needed

Comment on lines +12 to +15
define l+ = e+ mu+
define l- = e- mu-
define vl = ve vm vt
define vl~ = ve~ vm~ vt~
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These can be removed as they are not used

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Dear @lviliani,

Thanks a lot for the detailed comments. As I mentioned before, the cards are the exact copy of what was used for producing Run2 bbHToTauTau samples, just that I have changed the beam energy.

I will remove these lines if they do not affect anything.

Comment on lines +64 to +67
lhapdf = pdlabel ! PDF set
320900 = lhaid ! If pdlabel=lhapdf, this is the lhapdf number. Only
! numbers for central PDF sets are allowed. Can be a list;
! PDF sets beyond the first are included via reweighting.
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Is there a reason for not using the default PDF set? You can get the default automatically adding these lines:

     'lhapdf'    = pdlabel     ! PDF set                                     
     $DEFAULT_PDF_SETS    = lhaid     ! if pdlabel=lhapdf, this is the lhapdf number
     $DEFAULT_PDF_MEMBERS = reweight_PDF

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@nitishkumarkv nitishkumarkv Nov 6, 2024

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Sorry for my limited knowledge on this part. Could you please explain me what would change if we keep it to default?

set gauge unitary
set complex_mass_scheme False
set max_npoint_for_channel 0
import model sm
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Do you need this line?

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I would keep it like that as it was used also for Run2.

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This looks the same as the previous card, so you can drop it.

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You can drop this card as well

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Do you need this param_card? What do you need change wrt default values?

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Same comments as previous run_card

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I have kept the param_card and run_card for each contributions(yb2, yt2 and ybyt), even though they might be same. I did this so as to be consistent with what was done for Run2. Please let me know if the repeated param_card and run_card still needs to be removed.

@@ -0,0 +1,6 @@
import model HC_NLO_X0_UFO-heft_bmass_noyb

generate p p > x0 b b~ / t [QCD]
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with the / t syntax you are removing all the diagrams containing top quarks. Is it intentional?

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I think it is intentional, anyway it does not restrict top quarks loops

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