sPHENIX cold QCD topical group

["Mattson, Gregory William" <mattson5 AT illinois.edu>]

Hi Charles,

Thank you for the helpful suggestions. I have addressed most of your points (update attached) but have two follow-up comments:

4. In the title of the second box, you can remove the C from Collisions -> pp collisions.

I'm not sure what you mean here... could you clarify?

6. Q1 and Q2: I'm guessing Q2 is the hard scale and Q1 \sim k_{\perp}?

Yes, exactly.

Best,
Greg

On Wed, 2023-09-20 at 14:18 -0400, Charles Joseph Naim wrote:

Hi Matt, 

Thank you for your nice poster. A few comments:

1. Could you modify the title of the poster? It suggests that you're discussing the entire cold QCD program at sPHENIX when you're only discussing transverse-spin-dependent asymmetries. Perhaps find a more appropriate title.

2. "sPHENIX will enable an array of cold QCD measurements in polarized pp collisions": not just in polarized pp collisions.

3. You mentioned "high resolution measurements": can you quantify?question

4. In the title of the second box, you can remove the C from Collisions -> pp collisions.

5. In the TMD Scheme, you might add: parton transverse momentum (k_{\perp}).

6. Q1 and Q2: I'm guessing Q2 is the hard scale and Q1 \sim k_{\perp}?

Generally speaking, you should shorten the sentences and perhaps bold the important parts.

Best regards, 

Le 20 sept. 2023 à 1:56 PM, Mattson, Gregory William via sPHENIX-cold-QCD-l <sphenix-cold-qcd-l AT lists.bnl.gov> a écrit :

Hi Ralf and all, 

Thank you for your comments! I have implemented the changes you mentioned and attach here the updated draft (also on Invenio).

By the way, Caroline created the graphic for the Sivers/BM/Collins functions. I agree it is a nice visual aid.

Best,

Greg

On Wed, 2023-09-20 at 08:46 +0900, Ralf Seidl wrote:

Hi Greg,

thanks for sending around your poster draft. I think overall it looks

already very good. I personally prefer not as many long sentences on the

poster, but that is a matter of personal taste.

One correction I have is that the Interference fragmentation is

collinear but not higher twist. Maybe you can add "leading twist" in the

bracket and it should be fine. I also would change "one scale

applicable" to "one scale observed".

I like the picture you made for the Sivers, Collins and BM functions,

could you maybe add in the middle something like: "nucleon spin" ,

"parton spin" and "transverse momentum" to make the arrows even clearer?

In principle you could add also a picture above the Collins definition

at the bottom with transverse parton spin and transverse hadron

momentum. Also for consistency, maybe put the green parton dots in each

of the three parts of the figure.

A few references would not hurt, in particular for ETQS.

Please replace the PPT formated Sivers function at the bottom with a

proper equation/latex version such that sub/superscripts are not

shifted.

Cheers,

Ralf

On 2023-09-20 08:20, Mattson, Gregory William via sPHENIX-cold-QCD-l

wrote:

Hello all,

Please find a draft for my poster "The sPHENIX Cold QCD Program" to be

presented at the 2023 SPIN conference. As the deadline to print the

poster is fast approaching, I would greatly appreciate any comments or

suggestions you have by tomorrow afternoon.

The draft is attached and can also be found on Invenio:

https://urldefense.com/v3/__https://sphenix-invenio.sdcc.bnl.gov/records/mpvxc-x7e52?token=eyJhbGciOiJIUzUxMiJ9.eyJpZCI6IjcxZWI3MDkzLTMzMjUtNDA0OC1hYThhLTJkMTczM2U4ZmEzZiIsImRhdGEiOnt9LCJyYW5kb20iOiJlYzEyMThiOGE5ZjA5Yjc4N2JiMWExOWVlYjJhNzE1ZSJ9.6IsPMo6JdRgsVbhfEEGO7GeEv5JpoZC7lrneybJOC3OyRgwqHziAd9bbMOw_n2r4hyHsUvwYKomfjulOxDNJ6Q__;!!DZ3fjg!-i2srYfpEgW7MuuKWja1m4AJ2Thqha_OZ28nGOIqu3uNl3Lpk49O-Owi5CgJSmBn8ygPKLOnAn0-FbFln161s_YtzeE$ 

Thanks,

Greg Mattson

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Yours sincerely,

Charles

———————————————————————— 

Dr. Charles-Joseph Naïm

Research associate

Center for Frontiers in Nuclear Science (CFNS)

Stony Brook University
Dept. of Physics and Astronomy
Stony Brook, NY 11794-3800, USA
Office C-117

Phone: +1 347 273 0887

Email: charlesjoseph.naim AT stonybrook.edu

     cnaim AT bnl.gov

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