STAR task force for evaluating tracking efficiency uncertainty

[Petr Chaloupka <petrchal AT rcf.rhic.bnl.gov>]

Hello Robert,

thanks a lot!
There seems to be some difference already at the level of K tracks like number of hits on slide 17.
This could mean, as Yuri suggested slightly different kinematics.
I would two things, we can discuss other tomorrow:

1) increase the number of hits for K tracks. Id' try to go above 40. This will take only the very good tracks.

2) It would be interesting to see also the DCA distributions.

Best regards,
Petr

On 12. 06. 23 15:33, Robert Líčeník wrote:

Hello everyone, 

I have updated the slides (beginning with slide 12) and you can see the distributions for positive tracks only.

https://drupal.star.bnl.gov/STAR/system/files/TrackingEffTask_061223.pdf

I still see very much different tracking efficiency.

Thanks,
Robert

On Mon, Jun 12, 2023 at 10:36 AM Robert Líčeník <licenik AT ujf.cas.cz> wrote:

Hi Yuri and Peter,

thanks for pointing that out. I am a little surprised to see such a significant effect of the track charge on the efficiency.

Is this the correct way to select only positively charged tracks:

pTi > 0 for K tracks and pTi < 0 for L tracks?

It seems like in the simulation plots we also see some tracks which correspond to negative charge, so I just want to make sure that this is the way to go.

Thanks,
Robert

On Sat, Jun 10, 2023 at 11:20 PM Petr Chaloupka <petrchal AT rcf.rhic.bnl.gov> wrote:

Hello Robert,

thanks a lot for making the. As Yuri pointed out I only simulated positive poins. Could you try to cut on the charge in both data and simulation?

With best regards,
Petr

On 09. 06. 23 14:46, Robert Líčeník wrote:

Hi everyone,

as discussed during the meeting, I have put together a few slides comparing results from cosmics data and simulation.

Please let me know if you have any suggestions or if you would like to see some additional plots.

The slides are uploaded at the meeting link below:

https://drupal.star.bnl.gov/STAR/event/2023/06/06/Tracking-Efficiency-Uncertainty-meeting/Cosmics-update

Thanks,
Robert

On Mon, Jun 5, 2023 at 9:44 PM Petr Chaloupka via Star-tf-trkeff-l <star-tf-trkeff-l AT lists.bnl.gov> wrote:

Dear All,

Please join our meeting tomorrow at 10:00 New York time.
Please upload any material for discussion to the drupal page:
https://drupal.star.bnl.gov/STAR/event/2023/06/06/Tracking-Efficiency-Uncertainty-meeting


With best regards,
Petr


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