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Higgs Physics and Future Opportunities
Speaker Dr Kirill Prokofiev, HKUST
Date 6 May 2019 (Monday)
Time 11:00 to 12:30
Venue Room 4334 (Lift 3), HKUST

With the discovery of the Higgs boson at Large Hadron Collider (LHC) at CERN in 2012, the particle spectrum of the Standard Model (SM) of elementary particle physics is complete. Despite of an impressive precision of the Standard Model predictions, this theory cannot be regarded as the final theory, since we know there is a lot more Dark Matter than SM matter in the Universe. 

At the end of its current Run 2, the ATLAS experiment at Large Hadron Collider (LHC) has collected about  150 fb-1 of data. This represents one half of the total dataset expected for the LHC program and about five percent of data, accounting for its future High Luminosity extension. While the analysis of this dataset is still on-going, there is currently no evidence for the direct production of new elementary particles.  In the years to come the priority should be thus given to indirect searches for the new physics: precision measurements of the physics observables and their comparison with the corresponding SM theory predictions. The Higgs sector is currently the least studied corner of the SM. Here the important discoveries are possible with present and future LHC datasets,as well as on the currently planned future accelerator facilities. 

HKUST has joined the ATLAS collaboration at Large Hadron Collider in 2014 as a part of the Joint Consortium for Fundamental Physics in Hong Kong (JCFP) composed of physicists of HKUST, HKU and CUHK. In the last five years the HKUST scientists played the leading role in multiple analyses of Higgs boson properties leading to groundbreakingpublications and worlds most advanced results. In this presentation, a brief review of the current  status of the Higgs boson properties measurements in ATLAS will be presented. The priority will be given to the studies where the HKUST team has played the leading role. The on-going studies,  as well as the future opportunities at the LHC and future particle physics facilities as well as the corresponding  methodology will be discussed. Particular attention will be paid to detector development work which is crucial for the future  development of experimental particle physics in Hong Kong. The application of developed hardware expertise to physics studies in future colliders, such as CEPC will be discussed.



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 and INFN.

For several 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. During his work in ATLAS Dr. Prokofiev held several management and coordination roles. 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. While continuing his work in ATLAS he is constantly exploring the future accelerator- and non-accelerator-based opportunities for new physics searches.  Dr Prokofiev is currently a Research Assistant Professor in the Department of Physics at HKUST and a Junior Fellow at HKUST Institute for Advanced Study.