Tau lepton is the heaviest lepton in nature. It has a shorter but detectable lifetime and can decay to both light leptons and hadrons. These unique characteristics make it a unique object to probe in the Higgs sector,at the same time detecting tau lepton at the Large Hadron Collider (LHC) is a fun job.

In this seminar, I will give a brief overview of the tau reconstruction and identification at LHC experiments, especially ATLAS. Then, the high profiletau-related physics programs at LHC will be discussed. For example, lepton Yukawa coupling, Higgs self-coupling, CP violationat the Higgs sector, Beyond SM Higgs bosons search, etc.

Prof. Lei Zhang, School of Physics at Nanjing University

Lei Zhang got his PhD from Nanjing University on BEPCII-BESIII experiment at 2011. After that, he worked on ATLAS experiment as a postdoc researcher at Academia Sinica, Taiwan and later at University of Freiburg, Germany. He has made a significant contribution to the discovery of Higgs boson to bottom quark Yukawa coupling which is the selected as the highlight of the 2018 by APS. From 2018, he joined in the school of physics in Nanjing University as a full professor. Lei’s research interests cover Higgs physics, BSM physics search and hadron physics. He and his group continue playing an important role on the Higgs physics program at ATLAS, especially on di-Higgs production search, BSM Higgs boson search, precise measurement of Higgs property, and improving the tau lepton measurement at ATLAS.