Mitchell Institute for Fundamental Physics & Astronomy
College Station, Texas 77843
In the standard model of particle physics, top quarks are produced mainly as top-antitop pairs. The production cross section of a single top quark associated with jets is relatively small and proportional to the Vtb value of the CKM (Cabibbo-Kobayashi-Maskawa) matrix. A precise measurement of the single top quark production cross section is of crucial importance for understanding the standard model. Dr. Wu will present a measurement of the single top quark cross section in the lepton + jets channel, using data collected by the CDF experiment at the Fermilab Tevatron. This measurement uses a NLO generator for the first time to model s- and t-channel single top quark production with the proper inclusion of the Wtchannel contribution.
As data-taking at the Fermilab Tevatron wound down, the Large Hadron Collider at CERN delivered about 29 fb-1 of data at a center of mass energy of 7 and 8 TeV, ultimately leading to the observation of the long-sought Higgs boson. The LHC is expected to operate at higher beam energies during the next run. In the longer term, physicists are planning a major upgrade to the LHC, referred to as the High Luminosity LHC (HL-LHC), to increase its luminosity by a factor of 10 beyond its design value. Dr. Wu will present recent studies for the upgrade of the CMS experiment at the HL-LHC. In particular, he will discuss the prospect of a search for supersymmetric particles in the vector boson fusion (VBF) channel at the HL-LHC, and the requirements of the CMS detector upgrade to fully exploit the physics potential of the HL-LHC.