Search for anomalous kinematics of top dilepton events in proton-antiproton collisions at center of mass enery = 1.96 TeV.

摘要

We present a search for anomalous kinematics of tt¯ dilepton events in pp¯ collisions at s = 1.96 TeV using 193 pb-1 of data collected with the CDF II detector. We developed a new a priori technique designed to isolate the subset in a data sample revealing the largest deviation from Standard Model expectations and to quantify the significance of this departure. In the four-variable space considered, no particular subset shows a significant discrepancy and we find that the probability to obtain a data sample less consistent with the Standard Model than what is observed is 1.0--4.5%.