URL: https://physikseminar.desy.de/zeuthen/past_colloquia/colloquia_in_2014/march_19_2014/@@siteview
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Single top-quark physics at the LHC
Dominic Hirschbuehl
Seminar room 3, 3.00 pm
With the large LHC collision datasets an increasing number of measurements testing the Standard Model is possible in single top quark production: cross-section and coupling measurements as well as searches for exotic particles. This talk summarizes the highlights in the area of single top-quark physics obtained with the two general purpose detectors ATLAS and CMS during the first three years of the LHC. It covers the 2011 and 2012 data taking periods, where the LHC provided pp collisions at a center-of-mass energy of 7 and 8 TeV. Measurements of single top-quark production in the t- and Wt-channels are shown and the determination of the CKM matrix element |Vtb| is discussed. Measurements of the top-quark to top anti-quark production cross-section ratio is sensitive to the parton distribution function in the proton, while measurements of angular distributions can be used to determine anomalous couplings of the Wtb vertex.
