Study of Beauty Production in Z Decays Using Different Fragmentation Models

摘要

;Contents: Introduction (Basic Concepts of Standard Model, The Process e+e- -->hadrons); The Apparatus (The LEP Collider, The L3 Detector); Monte Carlo Simulation (Event Simulation, JETSET, EURODEC, HERWIG, Summary on Generators, Detector Simulation); Reconstruction and Selection (Event Reconstruction, Signature of a b-hadron, Event Selection, Data Sample, Detector Effects); Fitting and Results (Fitting Strategy, Measurement Results, Measurement of Br(b --> lvX)); Conclusion.