Search for Anomalous Kinematics in tt̅ Dilepton Events at CDF II

Authors

Darin Acosta, University of FloridaFollow
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

7-8-2005

Comments

Published by American Physical Society. Phys. Rev. Lett. 95, 022001 (2005). http://prl.aps.org.Copyright © 2005 American Physical Society. Permission to use.

Abstract

We report on a search for anomalous kinematics of tt̅ dilepton events in pp̅ 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 (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%.