A Measurement Of The Top Antitop Production Cross Section In Proton Antiproton Collisions At Center Of Mass Energy
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A Measurement of the Top-antitop Production Cross Section in Proton-antiproton Collisions at Center of Mass Energy
Author | : Ulysses Allen Grundler |
Publisher | : ProQuest |
Total Pages | : 119 |
Release | : 2008 |
Genre | : |
ISBN | : 9780549908883 |
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I present a measurement of the tt¯ production cross section at s = 1.96 TeV using 2034 pb-1 of CDF Run II data using events with a high transverse momentum electron or muon, three or more jets, and missing transverse energy. The measurement assumes a t → Wb branching fraction of 100 percent. Events consistent with tt¯ decay are found by identifying jets containing heavy-flavor semileptonic decays to muons. The dominant backgrounds are evaluated directly from the data. Based on 248 candidate events and an expected background of 86.8+/-5.6 events, I measure a production cross section of 8.7+/-1.1+0.9-0.8+/-0.6 pb, in agreement with the Standard Model.
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