Model Independent Search For New Physics At The Tevatron

Abstract

This thesis is a global, model-independent search for new physics, performed with CDF Run II data. The Standard Model prediction is implemented in all final states simultaneously, and an array of statistical probes is employed to search for significant discrepancies between data and prediction. The probes (also known as "Vista", "Sleuth" and "Bump Hunter") are sensitive to population discrepancies, shape disagreements in distributions of kinematic variables, excesses of events of high total transverse momentum, and local excesses of data suggesting resonant production of new massive particles. The result of this search, first in 1 fb-1 and then in 2 fb-1, is null, namely no considerable evidence of new physics was found.