Higgs decays to ZJPsi, JPsiJPsi and YpsilonYpsilon (FTR-21-009)

CADI: https://cms.cern.ch/iCMS/analysisadmin/cadilines?line=FTR-21-009&tp=an&id=2531&ancode=FTR-21-009

Color Code

Color Meaning
BLACK Question or comment from ARC/conveneers
RED Authors know but not yet added/implemented
GREEN Answer from Authors
ORANGE Authors working on this item
BLUE authors answered but might need iteration with ARC

Comments form Sezen

L36: in and BSM —> in SM and BSM? add missing SM

Sec 4: Please prepare a table summarizing the selection.


Please prepare a dedicated section describing the extrapolation to HL-LHC, in particular how the samples were extrapolated, how xsects are treated, that the fit was used for extrapolating data, but (to my understanding) a new fit was done for HL-LHC, etc.

Clarify early on how the electron channels will be indirectly treated. This only becomes clear in the results section.

After the introduction, add a section describing the strategy, including the addition of the electron channels in Z J/psi.

Figs 2 and 3: “x” missing from the signal legend lines.

Add 'x' to BF value in plot.

In my opinion, it might be nicer to have Figs 2 and 3 in the results section, after everything is described.


L227: You can reduce lumi uncertainty to 1%, which is the HL-LHC value.


Are there no systematics effecting the background shapes?

The background parameters are floating.

A plot summarizing the Run2, 3000fb-1 and 4000fb-1 upper limits together with systematics would be very good.

Since the limits with respect to the SM in the two channels are quite different, a graphical representation will be difficult. We include a new result table.

For the version after preapproval, let's also change the PAS title to reflect that the analysis is done for HL-LHC. Modifying the first part of the abstract would also be helpful.

done - instead of at CMS changed to .. at HL-LHC

Comments form Sascha

My major comment is that currently the PAS looks like copy of your Run 2 PASes, and it is not clear what was done to get this projection for the HL-LHC. I suggest you to shortened wherever possible the Run 2 and general descriptions and focus more on what you did to get the final results for the HL-LHC

1. Add to the title " at the HL-LHC"


abstract last line: reach with CMS detector at the HL-LHC


(I dont think you use explicitely the upgraded CMS detctor in this projection, do you?)

We use the new acceptance in tracking, and muon and electron identification

l.25 Figure 1 ...


I think that the introduction, even it is nice, is very long. You have referenced 2 PASes that you use from Run 2 and I think you can just refer to them. The most important information that is difficult to separate from this text is that you are talking about 2 decay examples that have very low SM Br , and at Run 2 you can only reach a certain CL and now you try the HL-LHC since this is certainly a place where you can gain a lot. I would suggest to shortend the introduction, refer to HIG PASes and clean up the message.

We shorten the introduction. We would though like to make clear to the reader the connection between the channels in the description in this note, with no dependence on the previous notes.

Section 2 is a little bit confusing. Do you use anything from Phase 2 upgraded detector in this analysis? The description you have is about Phase 1 we need to change it to short description of Phase 2 where you can say at the end that you assume that the major efficiency will stay as they are in Run 2 for this projection. Some short version of this section you can take from FTR-18-019 where we need to add recent TDR references.

We shorten the description. We describe the relevant sub-detectors, most importantly the new acceptance which we include in the projection calculation.

l.136 I dont think you use 200 PU, this is Run 2 sample I think, one needs to say here what you do about 13 to 14 GeV, what is the strategy for projection etc

We include a strategy section. Most importantly, we find no dependence on the PU in previous analyses.

section 4 is once more, more like Phase 1 description that you can just reference.

Updated the section. Include a summary table.

section 6 we need to include YR uncertainties

BR uncertainties are included (from PDG) - systematics vii

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Topic revision: r7 - 2022-01-19 - StefanSpanier
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