sPHENIX is a new detector at RHIC.

[Stefan Bathe <bathe AT bnl.gov>]

Hi Jin, and also Christine and John Lajoie,

All great suggestions!  Thanks!

As for the Upsilon prediction, I don’t see it in Xiaojun’s talk: 

https://indico.cern.ch/event/854124/contributions/4144931/attachments/2169127/3663215/quarkonium.pdf

I think you are referring to Fig. 5 b), d) from https://arxiv.org/abs/2004.06746

Not sure if it would be a good idea to try to cobble something together at the nth hour.—Unless Marzia/Tony have a plot that was approved by the working group?

I put what could be the final version here:

https://drive.google.com/file/d/1XQA6kG8Yyj-Ss4iaGelp_tBpE-gQvkuE/view?usp=sharing

Regards,

Stefan

On Jan 13, 2021, at 8:37 PM, Huang, Jin <jhuang AT bnl.gov> wrote:

Hi Stefan

 

Thanks for the nice slides. Few suggestions for your consideration:

 

• Slide 5: 

• “XZ spatial  resolution [µm]” 
  -> “spatial resolution [µm]” 
  to use a more generic term
• “IBF-avoiding GEMs” 
  -> “GEMs for IBF-suppression” 
  as we still have small IBF in the GEMs
• “Careful  study of  space-charge  distortion effects” 
  -> “Careful  study of  space-charge  distortion effects on going” 
  just to put an action in the bullet

Slide 6: 

• Energy resolution for EMCal should use the full acceptance resolution, i.e. σ(E)/⟨E⟩=3.0(0.1)⊕15.4(0.3)/E to be fair

Slide 12:

• Not sure we have time to update this: One of the speaker on Monday (Xiaojun Yao) made an Upsilon R_AA vs Npart and R_AA vs pT prediction for the sPHENIX kinematics based on a HQ transport model [arXiv:2004.06746]. It would be great to include the curves in the plots. The data points were shared with Upsilon TG conveners in the last Nov. @Anthony Frawley@Marzia Rosati

Slide 14: 

• “  wide  pT range  from  2  –40 GeV” 
  -> “  wide  pT range  from  2  –35 GeV”, 
  as the v2 has lower pT cut off than that of the RAA due to stat. limit

Slide 15: 

• “Heavy  flavor  correlations” 
  -> “Heavy  flavor jet pairs”
• And the comment box could be 
  * back-to-back di-b-jet pairs suppress the contribution from gluon splitting. 
  * R_AA for di-b-jet pair invariant mass show strong sensitivity to the heavy quark’s coupling to QGP

Slide 20:

• This slides has large amount of text which would be hard to digest or quantify.
• Suggest remove this slides and shrink it to a single bullet to slide 21: “High stat. jet and photon sample also enables further spin physics opportunities, including Jet TSSA, di-jet correlation and TSSA, Collins asymmetry hadron in jet”

 

Hope this is useful. And enjoy your talk tomorrow!

 

Cheers

 

Jin

 

 

______________________________

 

Jin HUANG

 

Physicist, Ph.D.

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________

 

-----Original Message-----
From: sPHENIX-l <sphenix-l-bounces AT lists.bnl.gov> On Behalf Of Stefan Bathe
Sent: Wednesday, January 13, 2021 3:13 AM
To: sphenix-l AT lists.bnl.gov
Subject: [Sphenix-l] draft sPHENIX overview talk for Initial Stages

 

Dear All,

 

Marzia kindly invited me to give the “The sPHENIX experiment at RHIC" talk at Initial Stages.  The talk is 20 minutes long (total) and takes place on Thursday.  I uploaded a draft here:

 

https://drive.google.com/file/d/1wwkxmFsvPU188iiALk2S5tQ1oiyQYsZX/view?usp=sharing

 

and welcome your comments.

 

Regards,

Stefan

 

-- 

---------------------------------------------------------------------------------

Stefan Bathe

Professor of Physics

Baruch College, CUNY

 

Baruch:                                     BNL:

17 Lexington Ave                      Bldg. 510

office 940                                  office 2-229

phone 646-660-6272                phone 631-344-8490

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