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CEPC studies plan

This is a plan agreed between ANL (Sergei Chekanov) and IHEP (Manqi Ruan). The document is observableproposed.docx

Single electron studies

Setup analysis environment:

wget http://atlaswww.hep.anl.gov/asc/jas4pp/download/current.php -O jas4pp.tgz
tar -zvxf jas4pp.tgz
cd jas4pp
source ./setup.sh # takes 5 sec for first-time optimization

We will study single-particle files posted to as shown here. Let's check file availability:

hs-ls pgun_electron_eta3_pt150gev

We will use the reconstruction tag “rfull101” which corresponds to SiCEPC detector.

Now download the files and calculate track resolution for electrons. We will use this script to make the resolution plot track_resolution.py

hs-get pgun_electron_eta3_pt150gev%rfull101 data/electrons 2 100 # get 100 files in 2 threads in the directory "data/electrons"
fpad track_resolution.py

The output resolution is