search

cms-sw / genproductions

Generator fragments for MC production
https://twiki.cern.ch/twiki/bin/view/CMS/GitRepositoryForGenProduction
79 stars 788 forks source link

add HZ and HW at 120 and 130 #3775

Closed Paul-Krueper closed 3 weeks ago

yihui-lai commented 1 month ago

Hi @bbilin @lviliani , could you please have a look at these cards? These are duplicates of the SM cards, with only the mass changes to 120 and 130; the min_h_mass and max_h_mass are changed accordingly as well.

lviliani commented 1 month ago

Is it ok to change the Higgs mass and not the width?

Paul-Krueper commented 1 month ago

Hi I can reproduce the gridpacks and cards if the Higgs width needs to be changed.

If so please let me know, along with the values for the width I should use at 120 and 130 Thanks

lviliani commented 1 month ago

If the width needs to be changed or not depends on how much your analysis is sensitive to this parameter. In general, the Higgs width depends on the mass value you assume, while in these cards I think you are using the value corresponding to 125 GeV also for 120 and 130. You can probably find the Higgs width values as a function of the mass in the LHC Higgs WG pages.

Paul-Krueper commented 1 month ago

I just spoke with my analysis team and our analysis wont be sensitive enough to measure width effects, so it is fine to keep the width constant across 120-125-130. Let me know should anything else in the cards be unclear

lviliani commented 1 month ago

Ok. Nevertheless. since this samples could be used also by other analyses and it's a very simple change, I would prefer to make things right. Please update the width values, according to what was also used in UL requests, have a look here for example: https://github.com/cms-sw/genproductions/blob/master/bin/Powheg/production/2017/13TeV/Higgs/WplusHJ_HanythingJ_NNPDF31_13TeV/makecards.py

Paul-Krueper commented 1 month ago

okay, I will change the cards accordingly. To be clear, I will have to reproduce all corresponding gridpacks too right ?

yihui-lai commented 1 month ago

okay, I will change the cards accordingly. To be clear, I will have to reproduce all corresponding gridpacks too right ?

Yes

Paul-Krueper commented 1 month ago

Hi all, the samples you pointed to were used for high mass/off shell analyses that are specifically sensitive to the width - the other samples we are using for our analysis, eg GGH in https://github.com/cms-sw/genproductions/tree/master/bin/MadGraph5_aMCatNLO/cards/production/13p6TeV/Higgs use the same width across different masses.

I have also found other Run 3 examples where the width was not changed with different mass eg for ggH again https://github.com/cms-sw/genproductions/tree/master/bin/Powheg/production/Run3/13p6TeV/Higgs/gg_H_quark-mass-effects_NNPDF31_13p6TeV

Since it is a lot of gridpacks we'd have to reproduce and also to keep things consistent, we'd prefer to keep them as they are. Let me know what you think. Thanks

lviliani commented 3 weeks ago

I will merge this PR, given that you are likely not sensitive to this small change in the width.

But let me just point out that in general the argument of having to reproduce the gridpacks is not acceptable. There's no point in reviewing the cards if the gridpacks have been made already and they can't be reproduced.

Paul-Krueper commented 2 weeks ago

Thanks for merging. To be clear, the gridpacks are consistent with these cards that are now merged. Do let me know if you need anything else.