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[Sphenix-physics-l] [minutes] Joint HF/Quarkonium TG meeting Sept 15 9:30AM EDT

From: "Huang, Jin" <jhuang AT bnl.gov>
To: "Huang, Jin" <jhuang AT bnl.gov>, "sphenix-hf-jets-l-request AT lists.bnl.gov" <sphenix-hf-jets-l-request AT lists.bnl.gov>
Cc: "sphenix-physics-l AT lists.bnl.gov" <sphenix-physics-l AT lists.bnl.gov>
Subject: [Sphenix-physics-l] [minutes] Joint HF/Quarkonium TG meeting Sept 15 9:30AM EDT
Date: Fri, 17 Sep 2021 16:10:22 +0000

Call for help from HF TG on helping out tracking development:

Further develop tracking QA, in particular with the observables and analysis used in HF analysis
Develop the handling of pp pile up in tracking and vertexing

Secondary vertex analysis - Sanghoon Lim

From July check:

Sanghoon: the track distance is calculated towards the truth vertex

Joe: tracking performance will be different after July

From Sept check:

Tony: track selection needs to be careful: before this weekend, there is a large population of duplicated tracks that is now rejected with a new module. Usually, run with gtrack, ie. start analysis with truth track, when calculating efficiency.

Joe: now also reconstructing displaced tracks.

Joe: displaced track finding in TPC is well done. MVTX displaced track can find to up to the first layer. Significant improvement in displaced track finding right now.

Tony/Joe: if the track base position is wrong, it may miss initial MVTX hits based on the construction of ACTS Kalman fitter

Discussion: it will be very helpful to integrate this analysis into continuous integration checks for tracking team

Primary vertex reconstruction - Joe Osborn

Pythia configuration for the vertexing resolution comparison plot:

Default Pythia: qHat 10 GeV

MB Pythia, ie. with a low qHat cut

c-cbar, also produced low pT and biased towards longer HF decays

PCA resolution with vertex distribution:

Tony: this is an artifact as tracking is fine. PCA resolution need to be recalculated against the vertex plane rather than 0,0,0

Tony: trigger efficiency, recording

______________________________

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

______________________________

From: sPHENIX-upsilons-l <sphenix-upsilons-l-bounces AT lists.bnl.gov> On Behalf Of Huang, Jin via sPHENIX-upsilons-l
Sent: Tuesday, September 14, 2021 12:10 AM
To: Sphenix-upsilons-l AT lists.bnl.gov; sphenix-hf-jets-l-request AT lists.bnl.gov
Cc: sphenix-physics-l AT lists.bnl.gov
Subject: [Sphenix-upsilons-l] Joint HF/Quarkonium TG meeting Sept 15 9:30AM EDT

Dear all,

We will hold a joint HF/Quarkonium TG meeting Wed on September 15 at 9:30am EDT.

We have the following talks on the agenda:

Introduction: co-conveners
Primary vertexing reconstruction and TODOs – Joe Osborn
Secondary vertexing analysis – Sanghoon Lim

Please join us via:

Indico: https://indico.bnl.gov/event/13130/

Zoom: https://bnl.zoomgov.com/j/1613938007?pwd=QjYzUnpYQ2xNZWZLSy9qd3Z4dFpzZz09

Looking forward to meeting all of you!

Hideki, Jin, Tony and Marzia

______________________________

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

______________________________

[Sphenix-physics-l] [minutes] Joint HF/Quarkonium TG meeting Sept 15 9:30AM EDT, Huang, Jin, 09/17/2021