WWss PAS/AN v1 comments/questions
  • please document QCD-QED interference studies in AN and add few sentences with conclusion to PAS
  • please check that jet dr cone size, luminosity, signal and background definition for WW is correct everywhere in the documentation
  • 8TeV → 13 TeV in the documentation
  • Fake rate (please include more information for the fake rate method): 
  • please include the exact event selection used to derive the fake rate
  • include the plots showing fake rate as a function of pt and eta
  • please make it clear in the documentation that you use both TL and LL regions to apply the fake rate to
  • please motivate the 30% uncertainty on the fake rate
  • please update: table 2 (WZ), table 6
  • L211: “The muons used to reconstruct a Z candidate are selected inside the fiducial region of the muon spectrometer” I assume this is from another analysis…
  • L236: do you use jets up to eta 5?
  • please document more details on the fit. Which regions are used, that the fit is simultaneous, what are the input yields and nuisances, and which parameters are fitted with which constraints. Once unblinded please report the (prefit and) postfit parameter values and uncertainties. So this would mean fake lepton normalization and WZ normalization. 
  • figures 2 and 3: once you unblind please include the postfit normalized plots
  • 7.3 loose ll+jj control region. Please motivate this control region. I think it is good to have this as extra information but some motivation in the text is needed.
  • L387: you do not fit MET here..
  • L432-435: please update, WZ is data-driven
  • L442: DM sample…
  • table 11: what is the definition of “SM expectation”? WW QCD+EWK?
  • Please include two different fiducial regions for cross section measurement. One region consistent to region used in 8TeV analysis and another tighter region that is close to selection cuts.
  • figure 5: the “impact” of “QCD scale” is ~10%. I would expect this value to be the same as “QCD scale” on signal in table 9 of 5%. Why are these so different? I guess I am missing something here..


Thanks to the authors. It was a very useful presentation to clarify a few things. So the list of comments is shorter now. As it was mentioned in the meeting, we expect to have a decent document ready before the CADI line can be created by the SMP convenors and it would also help ARC members to review your analysis smoothly. 

  • Section 2 :  Can you please document which MinBias cross section is used for PU reweighing into AN ?
  • table 1 : update to re-miniAOD
  • table 2 : the WWW is missing from the table. The dataset name for ttZ(qq) is incorrect. Can you please document the k-factor listed in the table in AN as well ? 
  • table 3 : does the primary vertex selection given still hold for Run-2 ?
  • Section 4.1 : Can you please document the exact MET filters used in this analysis ? 
  • Section 4.4 and 4.5 : please document the SFs you use. If it’s measured by yourself, please document how it’s done. Do you apply any electron energy regression and scale correction/smearing and muon momentum correction ? 
  • Section 4.6 : Do you plan to update to newest JEC ? I am just curious whether we can use jets between 4.7 and 5.0 in Run-2. Please also add the jet ID you use.
  • Section 5 : I was wondering whether you can optimize the selections a bit to excess 5-sigma so it’s nice to see it’s done already.
  • Section 7 : I have to say this section needs to include much more details for review. In addition, it is odd in the current AN when the loose dilepton and dijet CR is mentioned because it does not mention what it is for. 
  • Section 9 : What does it mean “fit to the MET shape” in L386-387 ? 
  • Section 9.4 : How do you smear jets when there is no matched gen jet ? Do you smear your jets in MC in nominal analysis ?
  • L442 : What is DM in this analysis ?
  • Figure 6 : What are the shaded bands ? Does it represent the statistical uncertainty only ?