学术报告（8月27日 14:00-15:30）

主持人：王为 教授

欢迎广大师生前来参与！

【摘要】

The discovery of a Higgs boson at the Large Hadron Collider (LHC) at CERN has opened a new chapter in elementary particle physics. With this discovery the predicted particle spectrum of the Standard Model is complete. It is known, however, that in its present form the Standard Model is not the most general theory of particle interactions. Among other difficulties, is not extendable to an arbitrary energy scale, does not include gravity and does not possess any natural Dark Matter candidate. The new physics Beyond the Standard Model should thus exist. In the collider experiments such new physics can be discovered through the direct searches for new particles and/or through the measurement of well-known parameters and observation of deviations from their respective Standard Model predictions. Currently, there is no evidence for new particles at the LHC; the second option thus becomes the priority direction of studies.

The Higgs sector is currently the least studied part of the Standard Model. In particular, the Higgs boson mass, decay width, strength and structure of its couplings to other Standard Model particles are studied in the limit of available statistics. While no significant deviation from the Standard Model is currently seen, these studies have a large potential for improvement during the subsequent runs of the LHC. In this presentation I will review the current status of the Higgs boson properties measurements, concentrating on the areas where the new physics effects may be observed in future. The prospects for the Higgs boson studies using the data Runs 2 and 3 of the LHC as well as of the High-Luminosity LHC will be presented. The status of development of the methodology for such measurements will be discussed.

【报告人简介】

Dr Kirill Prokofiev received his Master of Science degree in physics from St Petersburg State Polytechnical University in 2001. He received his PhD in Elementary Particle Physics from the University of Zürich in 2006. Dr Prokofiev held research appointments at the University of Sheffield and New York University as well as Fellowships at CERN, INFN and HKUST IAS. For almost twenty years Dr Prokofiev worked in CMS and ATLAS experiments at the Large Hadron Collider at CERN. He made a major contribution to the preparation of data reconstruction and analysis of these experiments. In 2012-2013 he participated in the analyses resulted in the discovery of the Higgs boson by the ATLAS experiment at the LHC. In 2013-2014 he played a leading role in establishing the quantum numbers of the Higgs boson using ATLAS data. For years 2014-2015 Dr Prokofiev was appointed as coordinator of ATLAS Higgs combination and properties subgroup. His current physics interests are concentrated around the experimental measurements of Higgs properties, searches for heavy Higgs particles and searches for the Physics Beyond the Standard Model. Dr Prokofiev is currently a Research Assistant Professor in the Department of Physics at HKUST and Junior Fellow at HKUST Institute for Advanced Study.