sPHENIX EMCal discussion

["Perepelitsa, Dennis" <dvp AT bnl.gov>]

Hi Sijan,

Thanks for the nice slides and your hard work on this topic.

Given the content, I would propose that you present this in the Calo Calib since they may have some feedback on the calibration-specific part at the beginning, but then have the official WiP approval in the JS TG on Wednesday.

By the way, in the future, can I ask you to make this an Invenio “request” rather than “record” so we can post comments there?

In general I think the plots need some significant work with the format and labelling. Some axis labels are partially cut off, axis titles are added by hand with different fonts, etc.

For all plots, can I confirm that you are using the sPHENIX plotting style here: https://wiki.sphenix.bnl.gov/index.php?title=Plot_template 

Can you use a consistent labelling for “etabins” vs. “ieta”, etc. How about “#eta bin index”, “#phi bin index" ?

Here are some more slide by slide comments:

Slide 3: the left plot needs better labelling (axes, what is the sample, etc.). For the right plot, can you give the HIJING species and centrality range? 

Slide 4: what is the plot on the upper left? Is that a cartoon or does it need some sPHENIX labelling?

Slide 5: these need data/simulation/etc. labelling

Slide 6: the left plot looks “stretched out” somehow - can you check? For the right plot, the pi0 mass values for many towers are as low as ~0.12 or ~0.10 GeV (blue-green). Is that really right?

Slide 7: the “Foreground” distributions left and right are different - should they be? I think you should change the “Background” label since the left plot is “Combinatorial background only” (right?) while the right plot is “Combinatorial and correlated background” (right?). Also why not have this just be one plot showing both background types? In general, this would be good to discuss in a meeting.

Slide 8: again, I would try to improve the plotting. “pairpT (GeV/c)” -> “#it{p}_{T}^{#gamma#gamma} [GeV]”, etc. The plot on the right - is that from sPHENIX simulation or data? It should be labelled.

Slide 9: I like the labelling of the bottom plots - can we make the upper right more like this? (“Inv Mass” -> “M_{#gamma#gamma}”, etc.). For the top plot, I would remove the “stats” box and add legends for the two colors. And again, if this is data or simulation, that should be labelled.

Slide 10: for the bottom right plot, I would put “#eta #to #gamma#gamma” as a label somewhere. Can I suggest “Uncorrected yield” and “Uncorrected #it{p}_{T}^{#gamma#gamma}” as axis labels. I would make it clear that this is an example extraction of yields in some particular pT range (3-8 GeV only) and in some particular sample of p+p data (do we know how big?).

Slide 11: these plots look grainy to me, can you double check that you have the original high-resolution PDF? (And again I suggest “Invariant Mass” -> m_gammagamma) We should discuss in the JS TG with what caveats we want to show these, since they are moving in the direction of a yield / cross-section extraction. For our internal book-keeping, can you state what approximate luminosity fraction these are?

Slide 11 bottom right: there is a funny effect where the changing bin width makes the yield change in odd ways — I would just make it dN/dpT (with updated labelling)

Have fun at DNP,

Dennis

On Sep 26, 2024, at 10:35 PM, Regmi, Sijan <sr276419 AT ohio.edu> wrote:

Hi Everyone, 

 

Shortly after I upload, I realized it was the different than I intend to upload. Please find the link to newer/correct version.

https://sphenix-invenio.sdcc.bnl.gov/records/ry775-9r746

 

Sorry about that.

Sijan Regmi

 

From: sphenix-jet-structure-l-request AT lists.bnl.gov <sphenix-jet-structure-l-request AT lists.bnl.gov> on behalf of Regmi, Sijan <sr276419 AT ohio.edu>
Date: Thursday, September 26, 2024 at 11:50 PM
To: sphenix-jet-structure-l AT lists.bnl.gov <sphenix-jet-structure-l AT lists.bnl.gov>
Subject: [External] [[Sphenix-jet-structure-l] ] Sijan_Regmi_DNP_Slides

Use caution with links and attachments.

 

Hi Everyone,

 

Please find my DNP slides here in the following link :

 

“https://sphenix-invenio.sdcc.bnl.gov/records/fqavn-cyt39”  

 

Regards,

Sijan Regmi

Dennis V. Perepelitsa
Associate Professor, Physics Department
University of Colorado Boulder