sPHENIX MAPS tracker discussion

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

Welcome - Jin, Hideki

 

Join our studies and MatterMost chats: 

https://wiki.bnl.gov/sPHENIX/index.php/Heavy_Flavor_Topical_Group  

 

PAC meeting went well:

https://indico.bnl.gov/event/7881/  

Our efforts to enable the baseline data in the pp collisions is commended by the PAC. 

 

Beauty2020 conference 21-24 September 2020: https://indico.ipmu.jp/event/320/overview  

Registration is free. (Thanks to Cameron for the link!)

 

 

KFParticle - Cameron

Summary: many progress on KFParticle integration, in particular handling of the intermediate states such as Bs->JPsi Phi -> (ee)(KK) 

 

Slide 4: width narrow. 

Cameron: probably constrained 

 

Ming: impressive result. How about secondary vertex performance? 

Cameron: working in progress

Jin: does cascade decays with multiple secondary vertexes require additional development on top of the current work? 

Cameron: yes. 

 

 

D0 D0_bar separation - Thomas 

Summary: starting to look into the separation of D0 and D0_bar at sPHENIX

 

Zhaozhong: please double-checking the pi/pi, KK assumptions too, as there is a non-zero BR and become background to this analysis 

 

Cameron: please trace the mass peaks back to the truth D0 or D0_bar while performing the background study. The additional background could arise from doubly Cabibbo suppressed decay and the D0-D0_bar mixing

 

Ming: curious to quantified the separation power

Thomas: on-going

 

Slide4: 

Thomas: this data is from production, representing the pT integrated D0/D0_bar

 

Slide 5: 

Cameron: please check performance back to the truth D0/D0_bar information

 

And on-going further offline discussion at 

https://chat.sdcc.bnl.gov/sphenix/channels/hf-d0  

 

 

Verbal updates

 

Guannan: fixed vertex selection by switching to the refit vertex, working on DCA with respect to the truth vertex. 

 

Zhaozhong: Has a plan to move forward migrating the analysis to use EvtGen and Pythia8 in the sPHENIX software environment. 

 

 

 

 

______________________________

 

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: Saturday, September 12, 2020 11:50 PM
To: sphenix-hf-jets-l <sphenix-hf-jets-l AT lists.bnl.gov>
Cc: sphenix-maps-l AT lists.bnl.gov
Subject: [Sphenix-hf-jets-l] [Sept 14 Monday 7PM ET] bi-weekly heavy flavor topical group meeting

 

Hi Everyone,

 

This is a reminder that we will have our next HF topical group meeting on Sept. 14, Monday at 7PM ET.

 

The agenda will include:

- KFParticle update by Cameron Dean (LANL)

- Separation of D0 and D0_bar by Thomas Marshall (UCLA)

 

Indico: https://indico.bnl.gov/event/9379/

Bluejeans connection: https://bluejeans.com/428810790

 

Besides the meeting announcement, if you would like to volunteer for any topic listed below or add any other one, please let us know.

https://wiki.bnl.gov/sPHENIX/index.php/Heavy_Flavor_Topical_Group#Study_plans  

 

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

______________________________