sPHENIX cold QCD topical group

["Riedl, Caroline" <criedl AT illinois.edu>]

Hi Devon,

Good to go to print from my side! 

(Maybe change "transversity distribution" to "transversity PDF" - to be consistent with "Sivers TMD PDF" right above.) 

Best,

Caroline

---

Caroline Riedl

Research Associate Professor

Department of Physics, UIUC

---

From: Devon Loomis <dloom AT umich.edu>
Sent: Tuesday, September 19, 2023 11:29
To: Ralf Seidl <rseidl AT rcf.rhic.bnl.gov>; Riedl, Caroline <criedl AT illinois.edu>
Cc: sphenix-cold-qcd-l AT lists.bnl.gov <sphenix-cold-qcd-l AT lists.bnl.gov>
Subject: Re: [Sphenix-cold-qcd-l] Poster Draft for Spin 2023

 

Hi Caroline and Ralf,

Thank you for the comments. I have tried to address them all in this updated version of the poster. I could not find a public source for the DiIFF plot after looking around so instead I have included a Collins asymmetry plot. I have also gone back and tried to increase resolution on all plots from the previous version. I will still include the plots with 62 pb^-1 but will make sure to verbally mention that the statistical errors would be scaled up by roughly 25% with updated luminosity projections.

Thanks,

Devon

On Mon, Sep 18, 2023 at 10:49 PM Ralf Seidl <rseidl AT rcf.rhic.bnl.gov> wrote:

Hi Devon,

I generally agree with Caro's comments. For the neutron AN figures,
there exist published plots from either PHENIX or the dedicated IP12
experiment at the beginning of RHIC
(https://inspirehep.net/literature/728677) that you should use and
reference.

About the online monitoring plots, the general PHENIX policy is, as far
as I remember, that non-physics plots are typically ok to show without
them being published or approved. As such, I think those figures are
probably fine and instructive. Maybe put also a "raw" in front of
"neutron asymmetry from square root formula".

A style suggestion, if you can, I would make the green in the first
formula also a bit darker for better visibility.

Enjoy Spin,

Ralf

On 2023-09-16 07:11, Riedl, Caroline via sPHENIX-cold-QCD-l wrote:
> Hi Devon,
>
>  Thanks for preparing a nice poster for SPIN! I have a few comments,
> most of them minor.
>
>       *
> General: It would be good if you could add some mentioning of the 2024
> pp running (for example, in the center of the RHIC sketch?). In my
> view, you don't have to quote an "expected total lumi" number in the
> current situation; but if somebody asks, you could quote from the
> table in on page 8 of Dennis' talk at the PAC meeting:
> https://indico.bnl.gov/event/20331/contributions/79936/attachments/49639/84911/dvp-PAC-9-11-23.pdf
> [1]
> Having said this, the projection plots you show are for the expected
> lumi that was assumed to be correct for several years, that is,
> 62pb-1. You can compare this to the rightmost column in the mentioned
> table. One can (roughly) say that the error bars (which are
> statistical only) in the projection plots you show have to be scaled
> up by a factor of 25% (because of the 50% of reduction in lumi ==>
> error goes with the sqrt)
>
>       *
> Top left box:
>
>       *
> The A_N formula is hidden a tiny bit at the bottom
>
>       *
> Middle left box:
>
>       *
> SPHENIX --> sPHENIX 🙂
>
>       *
> Bottom left box:
>
>       *
> The DiIFF projection plot is not in the BUP 2023 (which you cite). Is
> it contained in any of the other references you cite? We have to make
> sure it is a public plot. I believe that SashaB made this plot and the
> last reference I found to it was the CM Jan 2022,
> https://indico.bnl.gov/event/14039/contributions/58406/attachments/39124/64698/sPHENIX_CollMeet_7jan2022.pdf
> [2] . Let me know if I can help with pinning down the source.
>       *
> In addition to the general comment above about scaling the error bars,
> in the DiIFF plot you need to entirely ignore the blue points, since
> they are for eta up to 2... which we don't have (|eta_max|=1.1)
>
>       *
> Top right:
>
>       *
> The mentioning of "CW" and "CCW" - is it needed? These abbreviations
> do not appear anymore after.
>       *
> The sketch with the colliding bunch patterns is nice. Is there one for
> collisions at IP8 too? 🙂 Could you easily tweak the sketch to make
> one?
>       *
> Also related to the RHIC sketch - you mention "RHIC" only one time, in
> the references. Add/ place it somewhere close to the sketch.
>       *
> Some of the figures have really poor resolution, which may be too well
> visible when printed... (for example but not limited to the A_N plots)
>
>
>       *
> Middle right:
>
>       *
> Are the PHENIX monitoring plots public?
>
> ==> I don't know. Could one of the PHENIX collaborators comment
> please?
>
>  Best,
>  Caroline
>
> ---
> Caroline Riedl
> Research Associate Professor
> Department of Physics, UIUC
>
> -------------------------
>
> From: sPHENIX-cold-QCD-l <sphenix-cold-qcd-l-bounces AT lists.bnl.gov> on
> behalf of Devon Loomis via sPHENIX-cold-QCD-l
> <sphenix-cold-qcd-l AT lists.bnl.gov>
> Sent: Friday, September 15, 2023 15:45
> To: sphenix-cold-qcd-l AT lists.bnl.gov
> <sphenix-cold-qcd-l AT lists.bnl.gov>
> Subject: [Sphenix-cold-qcd-l] Poster Draft for Spin 2023
>
> Hello all,
>
> I am attaching a draft of my poster "Preparations for spin physics at
> sPHENIX" that will be presented at Spin 2023 . Any
> comments/suggestions would be greatly appreciated.
>
> Thanks,
> Devon Loomis
>
>
> Links:
> ------
> [1]
> https://indico.bnl.gov/event/20331/contributions/79936/attachments/49639/84911/dvp-PAC-9-11-23.pdf
> [2]
> https://indico.bnl.gov/event/14039/contributions/58406/attachments/39124/64698/sPHENIX_CollMeet_7jan2022.pdf
> _______________________________________________
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