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[Zaochen Ye <zy35 AT rice.edu>]

Dear All,

Please find the minutes for today’s discussion:

Xiaofeng: prepare for the PHD thesis proposal.

Ziyang: working on the cos(2phi) of Jpsi—>dimuon with the Run14 peripheral collisions, looking at 40-80% instead of 60-80% to increase the statistics. 

Zaochen: will submit the abstract and coverletter for nature presubmission

Yiding and Chenliang: working on the machine learning studies for photonics electron removal in BES-II, the working frame seems to be working well. 

Kaifeng: further check on the photonic electron tagging power comparison between primary track and helix, the conclusions:

• Photonic electron tagging power using global helix technique is slightly higher than using primary track
• Main reason is that, for the -25<Vz<30 cm, the dominant material contributions are close to vertex resulting in large fraction of conversion electrons have the primary momentum, thus the photonic electron pair reconstruction efficiency is similar between using primary tracks and helix.
• The technique maybe more helpful to reject those photonics electrons converted at large radius (>>3cm) region.

Thanks,

Zaochen

On Nov 8, 2022, at 8:21 AM, Brandenburg, James <jbrandenburg AT bnl.gov> wrote:

Hi all,

This is a reminder for our meeting today Nov 8th at 10am. 

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Best,

Daniel 

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