MEASUREMENT OF THE TOP QUARK PAIR PRODUCTION CROSS SECTION IN LEPTON+JETS FINAL STATES AT DØ USING A MULTIVARIATE TECHNIQUE

2005 ◽  
Vol 20 (14) ◽  
pp. 3177-3179
Author(s):  
◽  
TOBIAS GOLLING
Keyword(s):  
Pair Production ◽  
Cross Section ◽  
Top Quark ◽  
Production Cross Section ◽  
Production Cross ◽  
Final States ◽  
Multivariate Technique ◽  
Text Production ◽  
Lepton Jets ◽  
Pair Production Cross Section

A measurement of the [Formula: see text] production cross-section at [Formula: see text] with the DØ detector at the Fermilab Tevatron, based on the application of a multivariate topological method is presented. The integrated luminosity corresponds to 143.9 pb-1 in the μ+jets and 141.2 pb-1 in the e+jets channel. The preliminary cross-section is measured to be [Formula: see text].

scholarly journals TOP PAIR PRODUCTION CROSS-SECTION MEASUREMENT IN THE ALL-HADRONIC CHANNEL AT CDF AND DØ

2005 ◽  
Vol 20 (14) ◽  
pp. 3183-3186 ◽  
Author(s):  
◽  
DANIEL WICKE
Keyword(s):  
Neural Network ◽  
Pair Production ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Final States ◽  
Proton Antiproton ◽  
Text Production ◽  
Section Measurement ◽  
Pair Production Cross Section

Measurements of the [Formula: see text] production cross-section at [Formula: see text] in proton-antiproton collisions were performed by the CDF and DØ collaborations using [Formula: see text] final states where both W's decay hadronically. Each experiment uses luminosity of about 160 pb-1 of data collected during Run II of the Fermilab Tevatron collider. Beside kinematical observables both experiments take advantage of identifying b jets based on lifetime tagging. While CDF counts the number of b-tags over background after a cut based analysis, DØ counts the excess of events after a neural network based kinematical selection and requiring a b-tagged jet. CDF obtains [Formula: see text]; [Formula: see text].

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