Open AccessTop physics: search for anomalous kinematics in t anti-t dilepton events at cdf ii
Author(s) -
D. Acosta
Publication year - 2004
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/842926
Subject(s) - physics , bar (unit) , kinematics , particle physics , standard deviation , variable (mathematics) , nuclear physics , a priori and a posteriori , sample (material) , standard model (mathematical formulation) , statistics , mathematics , mathematical analysis , geography , thermodynamics , classical mechanics , archaeology , gauge (firearms) , meteorology , philosophy , epistemology
We report on a search for anomalous kinematics of t{bar t} dilepton events in p{bar p} collisions at {radical}s = 1.96 TeV using 193 pb{sup -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 (SM) 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 of obtaining a data sample less consistent with the SM than what is observed is 1.0-4.5%
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