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Re: [Sphenix-maps-l] In-time vertexing with INTT

From: mxliu <ming AT bnl.gov>
To: sookhyun lee <dr.sookhyun.lee AT gmail.com>
Cc: sphenix-maps-l AT lists.bnl.gov
Subject: Re: [Sphenix-maps-l] In-time vertexing with INTT
Date: Tue, 09 Oct 2018 12:25:36 -0600

Hi Sookhyun,

I thought the MVTX and INTT tracklets are more like straight ones (in-Z for sure, in-Phi, I thought the bending is small, but I couldn’t be wrong given the very fine MVTX pixel size), so you actually fit them with helical?

I notice some discussions on your slide #8, but not sure you are talking about MVTX-INTT or INTT-TPC matching?

Looking forward your presentation tomorrow.

Cheers,

Ming

Ming Xiong Liu

P-25, MS H846 TEL:505-667-7125

Physics Division 631-344-7821(BNL)

LANL 630-840-5708(FNAL)

Los Alamos, NM 87545 FAX: 505-665-7020

From: sookhyun lee <dr.sookhyun.lee AT gmail.com>
Date: Tuesday, October 9, 2018 at 11:53 AM
To: "Ming Liu (BNL)" <ming AT bnl.gov>
Cc: <sphenix-intt-l AT lists.bnl.gov>, sPHENIX-MVTX <sphenix-maps-l AT lists.bnl.gov>
Subject: Re: [Sphenix-maps-l] In-time vertexing with INTT

Hi Ming,

Yes, so far I only used 1 INTT layer to discriminate against out-of-time events. We certainly should reconstruct tracks using 2 MVTX hit + (2+) INTT hits at next iteration, but 2 MVTX hits only won't provide good starting curvature (for phi segmentation) or z0 parameter (for z segmentation) for INTT, thus cannot be used for in-time vertexing. I did not apply any pT cut on tracks used for vertexing.

Best regards,

Sookhyun

On Tue, Oct 9, 2018 at 12:14 PM Ming Liu <ming AT bnl.gov> wrote:

Hi Sookhyun,
Nice work! So in your analysis, only one INTT hit was used to tag in-time association to a MVTX triplets? How about if you only use MVTX tracklet with two hits only? Have you applied any minimum momentum cuts?

Cheers
Ming
Sent from my iPhone

On Oct 9, 2018, at 9:52 AM, sookhyun lee <dr.sookhyun.lee AT gmail.com> wrote:
Hello everyone,

Please find my updates on in-time vertexing with INTT below.

https://indico.bnl.gov/event/4036/contributions/24340/attachments/20294/27121/intt_in-time_vertexing_Oct8_2018.pdf

Let us have discussions tomorrow at Inner tracking task force meeting as well.

Best regards,
Sookhyun
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[Sphenix-maps-l] In-time vertexing with INTT, sookhyun lee, 10/09/2018
- Re: [Sphenix-maps-l] In-time vertexing with INTT, Ming Liu, 10/09/2018
  - Re: [Sphenix-maps-l] In-time vertexing with INTT, sookhyun lee, 10/09/2018
    - Re: [Sphenix-maps-l] In-time vertexing with INTT, mxliu, 10/09/2018
      - Re: [Sphenix-maps-l] In-time vertexing with INTT, sookhyun lee, 10/09/2018
    - Re: [Sphenix-maps-l] In-time vertexing with INTT, Xin Dong, 10/09/2018
      - Re: [Sphenix-maps-l] In-time vertexing with INTT, Anthony Frawley, 10/09/2018
      - Re: [Sphenix-maps-l] In-time vertexing with INTT, sookhyun lee, 10/09/2018
        
        Re: [Sphenix-maps-l] In-time vertexing with INTT, sookhyun lee, 10/19/2018
        
        Re: [Sphenix-maps-l] In-time vertexing with INTT, Christof Roland, 10/19/2018
        
        Re: [Sphenix-maps-l] In-time vertexing with INTT, Ming Liu, 10/19/2018
        
        Re: [Sphenix-maps-l] In-time vertexing with INTT, Xin Dong, 10/19/2018
        
        Re: [Sphenix-maps-l] In-time vertexing with INTT, sookhyun lee, 10/19/2018
        
        Re: [Sphenix-maps-l] In-time vertexing with INTT, Sanghoon Lim, 10/19/2018