Electroweak precision measurement at hadron colliders

by Dr Siqi Yang (University of Iowa)

Monday 13 May 2019, 14:00 → 15:00 Asia/Shanghai

B105 (CHEP)

The electroweak precision measurement is amoung the most important topics in experimental physics. In the past decades, many milestones in particle physics, including the discovery of the W and Z bosons, the top quark and the Higgs boson, benifit from the electroweak precision measurement and corresponding global fitting. From the beginning of this century, electroweak precision measurement has been performed at hadron colliders. After the discovery of the top quark and Higgs boson, it becomes important to help searching the beyond standard model phenomenon (especially for the situation that we did not have clear clue for new physics by direct searching at the LHC). To provide high precision for fundamental parameters in the electroweak theory (the W boson mass and the effective weak mixing angle), multiple topics have to be studied., including one order of magnitude improvement on the lepton reconstruction, better modelling of the PDF and calculation in QCD, and study on the strategy of performing such measurements at high instantaneous luminosity colliders. Siqi Yang started his work on electroweak precision measurement at the D0 experiment at the Fermilab’s Tevatron proton-antiproton collider. He then obtained his Phd in University of Scienci and Technology of China in 2016, and joint the ATLAS collaboration at CERN’s LHC. He is now a postdoc research assistant in the University of Iowa. He will discuss the highlights in the electroweak precision measurement at the Fermilab’s Tevatron, and introduce the current status of measurements at the CERN LHC.