Kinematics of tt¯ events at CDF

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doi:10.1103/physrevd.59.092001

Abstract

The kinematic properties of t{bar t} events are studied in the W+multijet channel using data collected with the CDF detector during the 1992{endash}1995 runs at the Fermilab Tevatron collider corresponding to an integrated luminosity of 109 pb{sup {minus}1}. Distributions of a variety of kinematic variables chosen to be sensitive to different aspects of t{bar t} production are compared with those expected from Monte Carlo calculations. A sample of 34 events rich in t{bar t} pairs is obtained by requiring at least one jet identified by the silicon vertex detector (SVX) as having a displaced vertex consistent with the decay of a {ital b} hadron. The data are found to be in good agreement with predictions of the leading order t{bar t} matrix element with color coherent parton shower evolution. {copyright} {ital 1999} {ital The American Physical Society}

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