Physics Analysis

• Generation                 (CMKIN)
• Simulation                  (OSCAR)
• Reconstruction          (ORCA)
• Analysis                     (ROOT)

• Generators acts like accelerators (LHC,LEP,TEVATRON)
• Discovery of Higgs and Super-symmetry
• Allow theoretical and experimental studies of complex multi-particle physics
• Vehicle of ideology to disseminate ideas from theorists to experimentalists
• Predict the event rates and topology (Kinematics of particles resulted from collisions)
• Simulate possible backgrounds
• Study detector requirements
• Study detector imperfections
• Evaluation of acceptance corrections
• Estimation of cross-sections ,branching ratios and decay Widths
• PDF uncertainties
• Hard processes and resonance decays
• ISR and FSR
• LO and NLO calculations

• Event Generation Structure

• Initialization step

• Select process to study
• Modify physics parameters
• Set kinematic constraints
• Modify generator settings
• Initialize generator
• Book histograms

• Generation loop

• Generate one event at a time
• Analyze it
• Add results to histograms
• Print a few events

•   Finishing step

• Print cross-sections/BR
• Print/save histograms

CRAB is a Python program intended to simplify the process of creation and submission of CMS analysis jobs into Grid environment.

• CRAB generates scripts and additional data files for each job
• The produced scripts are submitted directly to the Grid
• CRAB is aimed to give access to all data produced on any GRID station in the world without any knowledge of LCG at all
• NCP is a Certificate Authority , issuing digital certificates to grid users/hosts
  • PK-Grid-CA, the only certification authority in Pakistan
  • You can submit an online request for user/host certificate at:

     http://www.ncp.edu.pk/pk-grid-ca

NCP Experimental High Energy Physics Group