sPHENIX discussion of physics

["Dean, Cameron" <cdean AT bnl.gov>]

Hi all,

Here are the minutes for yesterdays meeting:

First, thanks to everyone that has been working hard on taking data and developing the tools required to enable physics analyses. We would like to encourage TG members to keep attending the daily tracking meetings at

 

https://indico.bnl.gov/category/478/

 

Your work here will directly impact any future physics analysis!

 

Track/calo matching – Antonio da Silva, ISU

 

Jin thinks it would be good to look at the track/calo matching efficiency in the azimuthal and longitudinal directions

On slide 7, Jin mentioned that the higher EMCal matching could be be due to the different trigger used between this slide and slide 5. Slide 5 used minimum bias triggers and slide 7 used photon triggers. The photon triggers will have a larger EMCal sample due to things like electron conversions

 

Tony commented on the phi dependence seen in slide 8. He noted there is an issue with the silicon seeding where we get the wrong charge a lot. It would be good to see the phi-dependent efficiency as well.

 

He also noted that measuring conversions are tricky as they occur outside the silicon. This means we won’t get a crossing number from the INTT. Jin noted that if we use the photon trigger then the collision time is determined by the EMCal so you can still do the matching

 

Cameron asked if the low efficiency could be due to the silicon/TPC matching rather than the track/calo matching so you don’t get the correct projection of the track to the calorimeter. Tony said it was very likely as the silicon efficiency is still low.

AOB

 

Xuan asked about the status of the silicon seeding and whether it would be discussed in these meetings. She (and possibly a new LANL member) would like to contribute. Tony said the best place to get up-to-date information is in the daily tracking meetings.

 

From: sphenix-hf-jets-l-request AT lists.bnl.gov <sphenix-hf-jets-l-request AT lists.bnl.gov> on behalf of Dean, Cameron <cdean AT bnl.gov>
Date: Wednesday, July 10, 2024 at 12:16 PM
To: Huang, Jin via sPHENIX-HF-jets-l <sphenix-hf-jets-l AT lists.bnl.gov>, Sphenix-upsilons-l AT lists.bnl.gov <Sphenix-upsilons-l AT lists.bnl.gov>, sphenix-physics-l AT lists.bnl.gov <sphenix-physics-l AT lists.bnl.gov>
Subject: Re: [[Sphenix-hf-jets-l] ] Next open heavy flavor and quarkonia meeting

Dear all,

This is a reminder that we will meet in a little over one hour from now, at 1:30 pm ET.

Talk to everyone soon,

Tony, Cameron, Jin and Marzia

 

From: sphenix-hf-jets-l-request AT lists.bnl.gov <sphenix-hf-jets-l-request AT lists.bnl.gov> on behalf of Dean, Cameron <cdean AT bnl.gov>
Date: Tuesday, July 9, 2024 at 1:12 PM
To: Huang, Jin via sPHENIX-HF-jets-l <sphenix-hf-jets-l AT lists.bnl.gov>, Sphenix-upsilons-l AT lists.bnl.gov <Sphenix-upsilons-l AT lists.bnl.gov>, sphenix-physics-l AT lists.bnl.gov <sphenix-physics-l AT lists.bnl.gov>
Subject: [[Sphenix-hf-jets-l] ] Next open heavy flavor and quarkonia meeting

Dear quarkonia and heavy flavor enthusiasts,

Thank you to everyone for your hard work in collecting pp data and developing all the infrastructure needed for the physics program. With that in mind, we will resume our joint topical group meetings from tomorrow, Wednesday July 10^th at 13:30 ET with a presentation from Antonio da Silva on track/calorimeter matching in data.

You can find the agenda at https://indico.bnl.gov/event/24151/ and the zoom link is https://bnl.zoomgov.com/j/1613938007?pwd=QjYzUnpYQ2xNZWZLSy9qd3Z4dFpzZz09

We look forward to talking with everyone tomorrow,

Tony, Cameron, Jin and Marzia