Madgraph Cards for Run2 UL ggF H->ToWW->LnuQQ Off Shell analysis

[sv3048]

Hi Experts !

I am requesting to review the cards for three samples ( signal, background and Signal Background Interference) for off shell semileptonic analysis ( H-> WW-> lnuqq) .
The background samples here are already used in Run2 legacy analysis and I have used same set of cards from the sample for producing gridpack. Kindly help us to optimize other run cards ( signal and SBI ) .

Thanks,
Sadhana

[1] https://github.com/cms-sw/genproductions/tree/b9fc8d4440f1bcb14a03be2e20f8fa814d8c4f19/bin/MadGraph5_aMCatNLO/cards/production/2017/13TeV/ggWW

[sv3048]

Hi !
@bbilin @lviliani !

The merging of this PR is important for us. As we requested high priority sample. Kindly review the Cards at your earliest convenience. These serves as the signal sample for our analysis.

cc'ing other team members: @vischia and HWW MC contact @amanagrawal1280.

Thanks,
Sadhana

[lviliani]

Regarding the syntax in this card, I think you are generating also quark-induced WW production and not only the gluon-induced. Is this what you need?
If the target is off-shell gg->H->WW, the background that interferes with the signal is only gg->WW.

[lviliani]

Same comment here.

[lviliani]

In general I would suggest to also look at the diagrams produced by MG in the 3 cases to make sure the syntax is correct and you are producing what you want.

Can you also clarify on the need of adding the cuts files? Is it needed only for gg->WW or also for signal?

Let me also include our Madgraph contacts who can help validating these cards @sihyunjeon @DickyChant.

[DickyChant]

In general I would suggest to also look at the diagrams produced by MG in the 3 cases to make sure the syntax is correct and you are producing what you want.

Can you also clarify on the need of adding the cuts files? Is it needed only for gg->WW or also for signal?

Let me also include our Madgraph contacts who can help validating these cards @sihyunjeon @DickyChant.

We have been helping out for this request for O(1y) scale, I think @bbilin @menglu21 @shimashimarin have more words to say

[sv3048]

Hi @lviliani !

1. I have cross-checked and all diagrams contains only gluons ( not quarks ).

https://github.com/cms-sw/genproductions/blob/b9fc8d4440f1bcb14a03be2e20f8fa814d8c4f19/bin/MadGraph5_aMCatNLO/cards/production/2017/13TeV/ggWW/ggWWlnuqq0j_4f_LO/ggWWlnuqq0j_4f_LO_proc_card.dat

This is the one card ( our Continuum Background here ) of legacy analysis sample gg->WW->lnuqq. here also they have used p p in syntax.

2. cuts.f files are used to remove gg->WW divergence effect. Only for Continuum and SBI.
   By mistake its included in the signal directory by me. I removed it. I also cross checked things in my gridpack that I prepared and its not included in the Signal Gridpack.

Thanks,
Sadhana

[sv3048]

Hi @lviliani !
a bit more detail on term gg->WW divergence :
The divergence occurs if transverse recoil by W boson is zero.
For example, if there's no gluon emission and Wpt~0, it is a diverging case.

This information is added as comment in the beginning of each cuts.f file as well.

Thanks,
Sadhana

[sv3048]

Hi @lviliani !

Please let me know if further information is needed. It would be great if we can converge on these soon.

Thanks,
Sadhana

[sv3048]

Hi @lviliani @bbilin !

Kindly let us know if there is any other input needed from our side. It would be great if these cards can be merged so that we can move with next steps for ggF samples.

Thanks,
Sadhana

also cc'ing our MC contacts @mlizzo @yihui-lai