Top quark physics and searches for new phenomena at the Tevatron

✍ Scribed by Raymond E. Hall

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 531 KB
• Volume: 71
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(98)00319-3

✦ Synopsis

The CDF and D~ collaborations each have collected over ll0pb -1 of data. The following article will describe near final results from two currently topical analyses: results from top quark physics and searches for first generation leptoquarks (LQ), using the entire statistics of these large data sets. After careful selection, both collaborations have collected top quark data samples consisting of several dosen events each. From these events both experiments have measured the top quark mass and pair production cross section in a variety of decay channels, including the so-called dilepton, lepton plus jets, and all jets channels. The combined top quark mass from both experiments in the lepton plus jets channels is mt= 175.6 ± 5.5GeV/c 2. CDF and D(~ have also performed optimised searches for the pair production of first generation leptoquarks. No candidate events were found. Combining the results from the ee+jets, eu+jets, and uu+jets c~annels both experiments set 95% confidence level (CL) upper limits on the LQ pair production cross section as a function of mass and of/3, the branching fraction to a charged lepton.