sPHENIX is a new detector at RHIC.

["Anderson, Derek [PHYSA]" <dmawxc AT IASTATE.EDU>]

Hi Raghav,

Thanks for the feedback! I've integrated your feedback as well as feedback from yesterday's JS meeting into a new draft of the slides. One thing to note is that for the side-by-side comparison with STAR simulations in backup, I'll update our figure to have the same x-axis units (ln(RL) rather than RL) between today and tomorrow.

Below, you can find the new version on Invenio in the link (also attached here) as well some I've in-line responses!

https://sphenix-invenio.sdcc.bnl.gov/uploads/r1656-qpw86

> SL 2 - "Modification of parton fragmentation in nuclei is well known but challenging to understand!” -> this reads a bit weird. Do you mean - modification of parton fragmentation in nuclei is expected but various effects are challenging to isolate in measurements - 

Yep. That's essentially what I was getting at! I've reworked those bullet points to be (hopefully) more clear...

> SL 9 - I think it would be good to have a cartoon reminding folks what R_L is here and a cartoon of the correlator. See some of the presentations in HP or QM about this from STAR/ALICE. They have some nice figures you can show. 

Good idea! For this draft, I've added a repeat of the cartoon from earlier. I plan on refining it with a cartoon of fragmentation over the course of today and tomorrow (similar to the diagrams STAR showed at HP2022)...

> SL 11 - don’t you need a citation for hijing here?

Whoops! I do indeed...

> SL 14 - "total differs by no more than 20%” - not sure what you want your audience to take away from this point? That region where you see the difference is in the perturbative region where your physics also could be hiding yeah.

Ah, good point! What I wanted to state here was simply that the signal-background rates are relatively small (<20%).

I've swapped out the 10 - 15 GeV/c jets plot here with the 20 - 30 GeV/c one: the differences in the perturbative region are actually smaller than in the 10 - 15 GeV/c case, but the shape between the sum and total spectra is still different (as it was in the 10 - 15 case)...

Derek

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

Derek Anderson

Postdoctoral Research Associate

Iowa State University

he/him/his

Please, do not feel obligated to respond

outside of your normal working hours.

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

---

From: Raghav Kunnawalkam Elayavalli <kunnawalkamraghav AT gmail.com>
Sent: Tuesday, October 31, 2023 10:44 PM
To: Anderson, Derek [PHYSA] <dmawxc AT IASTATE.EDU>
Cc: Kunnawalkam Raghav <kunnawalkamraghav AT gmail.com>; sphenix-l AT lists.bnl.gov <sphenix-l AT lists.bnl.gov>
Subject: Re: [Sphenix-l] Derek Anderson CFNS Energy Flow Slides

 

Hi Derek, 

Thanks for preparing your slides. Please find my comments below - 

SL 2 - "Modification of parton fragmentation in nuclei is well known but challenging to understand!” -> this reads a bit weird. Do you mean - modification of parton fragmentation in nuclei is expected but various effects are challenging to isolate in measurements - 

SL 4 - "May be sensitive to dynamics of fragmentation!” -> Sensitive to scale dependence of fragmentation 

SL 9 - I think it would be good to have a cartoon reminding folks what R_L is here and a cartoon of the correlator. See some of the presentations in HP or QM about this from STAR/ALICE. They have some nice figures you can show. 

SL 9 - "Transition between perturbative & non-perturbative broadens with increasing jet pT” -> so the key part here is not just that the transition between the two ‘regimes’ broadens, but the hump of the transition happens at smaller and smaller angles as you increase the jet pT. That is one of the primary usefulness of this observable in that this transition region of delta R * jet pT is consistent across every single jet pT range measured from RHIC to LHC! 

SL 11 - don’t you need a citation for hijing here?

SL 14 - "total differs by no more than 20%” - not sure what you want your audience to take away from this point? That region where you see the difference is in the perturbative region where your physics also could be hiding yeah.  

Cheers
Raghav 


**************************************
First Name - Raghav 
Last Name - Kunnawalkam Elayavalli
Pronouns - they/them
email - raghav.ke AT vanderbilt.edu 
website - https://www.raghavke.me 

RHIC/AGS UEC member
Assistant Professor of Physics
Stevenson Center 6410
Physics & Astronomy Department
Vanderbilt University 
Nashville, TN 37235-1807
**************************************

On Oct 28, 2023, at 12:13 PM, Anderson, Derek [PHYSA] via sPHENIX-l <sphenix-l AT lists.bnl.gov> wrote:

Hi all,

Apologies for the delay, but please find a draft of my slides for the 2023 CFNS Energy Flow workshop at Stony Brook University in the link below!

https://sphenix-invenio.sdcc.bnl.gov/me/requests/49785b07-3630-472e-b041-83441cddae95

Derek

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

Derek Anderson

Postdoctoral Research Associate

Iowa State University

he/him/his

Please, do not feel obligated to respond

outside of your normal working hours.

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

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