CERN - Open Data Analysis

• Connecting to METU Physics Server
• Starting root and pyroot
• Aleph Data Analysis
• Atlas Data Analysis
• CMS Data Analysis
• Basic Machine Learning using TMVA and Tensorflow

Connecting to METU Physics Server

Open mobaXterm in windows or open terminal in Linux/Mac and connect to server

$ ssh username@144.122.31.1

I'll show you ssh, rdp, sftp applications during the lecture.

Starting root and pyroot

  $ module start root
  $ alias root='root --web=off'

  $ root myprogram.C

  $ pyroot myprogram.py

  $ root myhistogram.root

Aleph Data Analysis

  $ ll /hepdata/Aleph/
  total 2879696
  -rw-r--r--+ 1 abingul hpccusers  743328324 Apr 26 13:52 AlephDA91.root
  -rw-r--r--+ 1 abingul hpccusers 2205473176 Apr 26 13:55 AlephMC91.root

Skeleton programs:

• skeleton_aleph_pi02gg.py - to obtain pi0 -> gg signals
• skeleton_aleph_phi2KK.py - to obtain phi -> K+ K- signals
• skeleton_aleph.cc - C++ example

Atlas Data Analysis

  $ ll /hepdata/Atlas/
  total 4
  drwx------+ 4 abingul hpccusers   43 May  3 20:17 4lep
  drwxrwxr-x+ 2 abingul hpccusers 4096 Apr 26 15:00 GamGam

Skeleton programs:

• skeleton_atlas_H2gg.py - to obtain H -> gg signals
• skeleton_atlas_H2lll.py - to obtain H -> 4 leptons signals
• skeleton_atlas.cc - C++ example

CMS Data Analysis

  $ ll /hepdata/CMS/
  total 8
  drwxrwxr-x+ 2 abingul hpccusers 4096 Apr 26 23:27 DoubleEG
  drwxrwxr-x+ 2 abingul hpccusers   49 May  3 23:52 DoubleMuon

Skeleton programs:

• skeleton_cms_dimuon.py - to obtain spectrum of X -> mu mu events (slow)
• skeleton_cms_dimuon.cc - to obtain spectrum of X -> mu mu events (fast)

Basic Machine Learning using TMVA and Tensorflow

• tmva_datasets.py - generates signal.root and background.root
• tmva_train.py - BDT training
• tmva_test.py - BDT testiing both MC and data

• tf_train.py - tensorflow training
• tf_test.py - tensorflow testiing both MC and data