Abstract
Particle physics is the study of the fundamental particles in nature and their interactions. The Standard Model (SM) of particle physics, successfully explains and predicts a variety of experimental results, and is not believed to be the ultimate theory for both theoretical and experimental reasons. Searching for physics beyond the SM (new physics), therefore, is one of the top priorities for experimental particle physicists. Among observed fermions so far, the top quark is distinguished by its mass close to the Electroweak scale. New physics may first manifest itself in their interactions with the top quark. So the measurements of top quark properties are considered not only the tests for the SM, but also the important probes for new physics. The Large Hadron Collider (LHC), the world's largest and highest-energy particle accelerator, has produced millions of top quarks in its first two years of operation. Therefore, the LHC is truly a top factory and top quark properties are expected to be examined with significant precision. In addition, the QCD production cross section of the top-like heavy quark at the LHC is expected to be several orders of magnitude larger than that at the Tevatron, the previous generation of hadron collider. This is a great opportunity to explore the possibility of new physics with an extended generation of fermions. In this talk, I will present my work on the top quark and the top-like particle search at the CMS experiment. I will also talk about my research plans for the future.
Coffee and tea will be served 20 minutes prior to the seminar.