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cms-sw / genproductions

Generator fragments for MC production
https://twiki.cern.ch/twiki/bin/view/CMS/GitRepositoryForGenProduction
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Change on center of mass energy request #3785

Closed G-Vian closed 2 weeks ago

G-Vian commented 1 month ago

Dear GEN Team,

I hope this message finds you well.

Please consider only the cards I submited in the folIowing folders: [cms-sw/genproductions/tree/master/bin/MadGraph5_aMCatNLO/cards/production/13p6TeV/TTHH_5f_LO] and [cms-sw/genproductions/tree/master/bin/MadGraph5_aMCatNLO/cards/production/13p6TeV/TT4b_5f_LO]

sihyunjeon commented 1 month ago

6840GeV beam comes from where ? also you mistakenly touched 13TeV directory which is fine with 6500GeV...

G-Vian commented 1 month ago

My intention is to obtain a center of mass energy of 13680 GeV for the proton collision, that's why each beam have a energy of 6840 GeV.

I corrected the directory, now the files are uploaded in the 13p6TeV directory

sihyunjeon commented 1 month ago

well that is still not 13.6TeV, maybe you should explain the motivation for that beam energy (or is there a plan from LHC to run at that energy before HL-LHC?)

your git commit still has 13TeV run_card.dat touched which should not be there

G-Vian commented 1 month ago

Now I adjusted the energy of the beams to 6800 GeV. I"ve also corrected the 13TeV run_card.dat.

G-Vian commented 1 month ago

Dear GEN Team,

I apologize for the previous error regarding the center-of-mass energy values. I have now corrected them and also made adjustments to the directories that I had inadvertently modified.

I look forward to any further updates you may have.

Thank you very much for your understanding and assistance.

G-Vian commented 3 weeks ago

Dear GEN Team,

I would like to kindly request if there are any updates about the change in the beam energy in the ttHH and tt4b cards I provided.

Thank you very much!

lviliani commented 2 weeks ago

Hi @G-Vian, sorry I have merged this PR but there are actually still a few potential issues as @sihyunjeon pointed out.

  1. In the ttHH run card you set 15000.0 = bwcutoff. This can lead potentially to both computing and physics issues, such wrong cross sections. Do you need such a large value? Otherwise please set it to 15 as in the other card.
  2. In the tt4b run card you are applying the following cuts which are likely not necessary (unless you have a specific reason) and could have an impact on the analysis: 
    10.0  =  mmjj     ! min invariant mass of a jet pair 
10.0  =  mmbb     ! min invariant mass of a b pair

    Can you please create a new PR to address these problems? Thanks and sorry for not realizing before.

asavoy829 commented 2 weeks ago

Hi @lviliani, related to the email here above sent to @G-Vian, please find here below our answers to the 2 points you mentioned: Point 1: we found the link to the cards for Run2 production [1]. The bwcutoff is the same value. I can see the person who prepared the cards uses a github account name jfernan2 but I did not recognize who he/she is [1] https://github.com/jfernan2/genproductions/tree/935ee2b8f8fce279c60c0696fa9e03b7e556a91a/bin/MadGraph5_aMCatNLO/cards/production/2017/13TeV/TTHH_5f_LO

Point 2: The Run2 tt4b cards were handled by Sebastian Wieland (former PhD student at KIT), but he left about 8 months ago. You can find the previous pull requests for tt4b Run2 in the links below [2,3,4]. It seems there was an intention to set mmjj and mmbb parameters. [2] https://github.com/cms-sw/genproductions/pull/2601 [3] https://github.com/cms-sw/genproductions/pull/2595 [4] https://github.com/cms-sw/genproductions/pull/2481 Unfortunately we have no more information about these points than those we mention here above. Hope it is useful for GEN. Many thanks in advance and staying tuned.

asavoy829 commented 2 weeks ago

Hi @lviliani It looks like [2], [3], [4] didn't were well reproduced so here below again: [2] https://github.com/cms-sw/genproductions/pull/2601 [3] https://github.com/cms-sw/genproductions/pull/2595 [4] https://github.com/cms-sw/genproductions/pull/2481