Top physics: search for anomalous kinematics in t anti-t dilepton events at cdf ii

[摘要] 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%.

[发布日期] 2004-12-14 [发布机构] Lawrence Berkeley National Laboratory

[关键词] 43 Particle Accelerators;Probability;Physics;Standard Model;Fermilab Collider Detector