Lepton Flavor Universality Test - CMS Run1 Data Analysis (149-161 GeV)

Complete analysis of Lepton Flavor Universality (LFU) using CMS Run1 open data at √s = 8 TeV in the dilepton mass window 149-161 GeV. Key features: - Standard PT method (PT > 10 GeV for both e and μ) - Parallel processing implementation - Full systematic uncertainties - MC vs Real data comparison Results: R_eμ = 0.735 ± 0.146 (Real data) and 0.733 ± 0.036 (MC), showing agreement at 0.02σ level. "notes": This package contains all code, results, and documentation for the LFU analysis. Key features: (1) Standard PT method (PT > 10 GeV for both e and μ), (2) Parallel processing with ProcessPoolExecutor, (3) Full systematic uncertainties, (4) MC vs Real data comparison showing 0.02σ agreement. The analysis finds R_eμ consistent with Standard Model predictions.