A Measurement of the Top Quark Mass with a Matrix Element Method
2006
- 434Usage
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Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Metrics Details
- Usage434
- Downloads398
- Abstract Views36
Thesis / Dissertation Description
We present a measurement of the mass of the top quark. Our event sample is selected from proton-antiproton collisions, at 1.96 TeV center-of-mass energy, observed with the CDF detector at Fermilab's Tevatron. We consider a 318 pb-1 dataset collected between March 2002 and August 2004. We select events that contain one energetic lepton, large missing transverse energy, exactly four energetic jets, and at least one displaced vertex b tag. Our analysis uses leading-order tt and background matrix elements along with parameterized parton showering to construct event-by-event likelihoods as a function of top quark mass. From the 63 events observed with the 318 pb-1 dataset we extract a top quark mass of 172.0 ± 2.6 (stat) ±3-3 (syst) GeV/c2 from the joint likelihood. The mean expected statistical uncertainty is 3.2 GeV/c2 for mt = 178 GeV/c2 and 3.1 GeV/c2 for mt = 172.5 GeV/c2. The systematic error is dominated by the uncertainty of the jet energy scale.
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