sPHENIX discussion of physics

["Huang, Jin" <jhuang AT bnl.gov>]

Hi Everyone

 

We will skip the next HF TG meeting during the US Memorial Day holiday, and meet in the next scheduled slot on June 14. Meanwhile, communication on our email list or matter most channels: https://wiki.bnl.gov/sPHENIX/index.php/Heavy_Flavor_Topical_Group#MatterMost_Chats

 

Have a great weekend

 

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

______________________________

 

From: Huang, Jin
Sent: Monday, April 19, 2021 10:20 PM
To: sphenix-hf-jets-l AT lists.bnl.gov
Cc: sphenix-physics-l AT lists.bnl.gov; sphenix-maps-l AT lists.bnl.gov
Subject: [minutes][Apr 19 Monday 8PM EDT] bi-weekly heavy flavor topical group meeting

 

Intro - Hideki

 

MDC1 analysis is ongoing. Thanks to many analyzers and let's keep the momentum going!

 

Short notes on MDC1's first batch of results, so they can be shown publicly (first in APS GHP talk): 

https://mmm.cern.ch/owa/redir.aspx?C=C6LNwfA1_6_zEY4qN0rGK6bYbfv8bSAyQRMWje4VTO3o8QWhCQPZCA..&URL="https%3a%2f%2fwww.dropbox.com%2fs%2fjnysp682ivnauma%2fsPH-HF-2021-001.pdf%3fdl%3d0 

TG plans to make final MDC1 notes in the near future. 

 

Ming/Xin: the importance of covering the low pT particle, in particular given the D* pT threshold will be limited by the slow pion's momentum cut off. 

Jin: require low pT tracking software to do track reco around and below 0.2GeV. But glad we have the first set of plots first. 

Zhaozhong: also looking at the non-prompt D final states from B decay. 

 

Jin: will discuss the new beam use proposal in the next meeting

 

 

HF reco tools - Cameron

 

New tool 1- DecayFinder: select any decay chain in the HepMC records

 

Jin: adding an Embedding ID option can be used to enable searching over only one HepMC event in a pileup or embedding scenario. For example, https://sphenix-collaboration.github.io/doxygen/db/de8/HFJetTruthTrigger_8cc_source.html#l00090 

 

Jin: Bring to DecayFinder coresoftware

Cameron: wait for another debug

 

Zhaozhong volunteered to help test

 

Sebastian/Cameron: the printout shows the acceptance just counting the simple kinematics cuts on the HepMC daughters, not yet including reco efficiency to make a full acceptance.

 

New tool 2 - Anti-trigger module, screen particular intermediate states. 

 

Zhaozhong/Zhaozhong/Cameron: useful to select the pure background from M.B events by rejecting the rare events that contains a signal. 

 

 

KFParticle update 

 

Now also work with ANA.241 (the build currently used to analyze MDC1 data, before completing of the DST file fixes) 

 

A new feature of record the whole decay chain history of a track

 

Decay parser interface to KFParticle, which describe final state selection via a formatted string. 

 

 

Quick updates: 

 

Han-sheng Li: missing sharp D0 DCA peak in the prompt D0

Cameron: plan to update truth information on vertex which helps to debug. 

Suggest run in test mode with ACTS vertex finder off, which would pick up a truth vertex during production: 

https://github.com/sPHENIX-Collaboration/analysis/blob/master/HF-Particle/KFParticle_sPHENIX/Fun4All_KFParticle_condorJob.C#L72

Will check with Joe on how to make ACTS vertex finder work in condor macro.  

Sebastian: past test confirm that turning vertex finder off in the analysis macro recovers the sharp D0 DCA resolution: https://chat.sdcc.bnl.gov/sphenix/pl/w5rkkwu8r3b1bnaoqidk7y518c 

 

Antonio Da Silva: currently work with ALICE HF jet, getting started with sPHENIX software 

 

 

 

 

______________________________

 

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-HF-jets-l <sphenix-hf-jets-l-bounces AT lists.bnl.gov> On Behalf Of Huang, Jin
Sent: Monday, April 19, 2021 9:00 AM
To: sphenix-hf-jets-l AT lists.bnl.gov
Cc: sphenix-physics-l AT lists.bnl.gov; sphenix-maps-l AT lists.bnl.gov
Subject: Re: [Sphenix-hf-jets-l] [Apr 19 Monday 8PM EDT] bi-weekly heavy flavor topical group meeting

 

Hi Everyone

 

Just a friendly reminder of the HF TG meeting tonight. Hope to talk to many of you soon.

 

Cheers

 

Jin & Hideki

 

 

______________________________

 

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: Huang, Jin
Sent: Friday, April 16, 2021 3:47 PM
To: sphenix-hf-jets-l AT lists.bnl.gov
Cc: sphenix-physics-l AT lists.bnl.gov; sphenix-maps-l AT lists.bnl.gov
Subject: [Apr 19 Monday 8PM EDT] bi-weekly heavy flavor topical group meeting

 

Hi Everyone,

 

This is a reminder that we will have our next HF topical group meeting on Apr 19 Monday 8PM EDT.  

 

The agenda is  https://indico.bnl.gov/event/11187/ which includes

 

• Introduction – co-conveners
• HF tool development - Cameron Dean
• Analysis updates welcomed

 

Please join us via

 

• Indico: https://indico.bnl.gov/event/11187/
• ZOOM connection: https://bnl.zoomgov.com/j/1613938007?pwd=QjYzUnpYQ2xNZWZLSy9qd3Z4dFpzZz09

 

We look forward to talking to you all at the meeting.

 

Best regards,

 

Hideki & 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

______________________________