Elementary Particle Physics Group @ Hanyang University

Elementary Particle Physics Group

We are involved in the CMS experiment at the Large Hadron Collider (LHC) CERN. The LHC is located at the border between Switzerland and France. The LHC is used to accelerate protons up to near the speed of light and collides protons together. The CMS detector is situated around 100 m below the surface. We use this detector to detect particles from the collisions. From the proton-proton collisions at high energy, new particles can be created and decayed into stable particles immediately. We need to be detectives to figure out the culprits, new particles!

Physics

  • Top quark pair production differential cross section measurement
  • Measurement of $t\bar{t}b\bar{b}$ cross section
  • Flavour Changing Neutral Current search
  • Lepton Flavour Violation search

Detector

  • CMS RPC detector upgrade R&D
  • CMS RPC detector performance measurement

Computing

  • Data grid computing
  • Monte-Carlo generators

Members

Professor
Tae-Jeong Kim
  • 2022.3- : Spokesperson for the Korea CMS Collaboration
  • 2023.9- : CMS Muon System Deputy Manager
  • 2023.9- : CMS Award committee member
  • 2021.9-2022 : Top Quark tX group convener
  • 2019-2022.8 : CMS RPC Institution Board Chair
  • 2014-2015 : CMS Analysis Tool group convener
  • 2013 : CMS Top quark cross section group convener
Post Doc.
Ece Asilar
  • CMS RPC trigger coordinator
  • iRPC implementation in the software for future data taking
  • Search for lepton flavor violation in top production and decay at CMS
Tianyi Yang
  • Search for diHiggs production in association with a top quark pair at CMS
PhD Students
Jieun Choi (2019-)
  • RPC + CSC/DT trigger development for RPC Phase II upgrade
  • Measurement of ttbb differential cross section
  • Dual PhD course of HYU and Lyon (France)
  • Search for singly produced Vector-Like Quark T'
  • CMS B2G PAG trigger contact person
  • CMS BTV POG trigger convener
Juhee Song (2020-)
  • Measurement of ttbb differential cross section using DNN
Yeonsu Ryou (2021-)
  • Search for LFV in top quark interactions
  • Study on application of Spike Neural Network on high energy physics
Master Students
Sungbeom Cho (2023-)
  • tthh feasibility study using DNN
Wooyeon Kwon (2024-)
  • Performance of muons using Z boson events in Run3
Alumni (Post Doc.)
Dr. Javier Brochero (2015-2017)
  • ttbb cross section measurement in lepton+jets channel
  • CMS TOP PAG muon contact person
  • Now researcher at Instituto de Física de Cantabria (IFCA)
Dr. Junghwan Goh (2016-2018)
  • Flavour Changing Neutral Current search
  • ttbar cross section measurement in dilepton channel
  • CMS RPC DPG coordinator
  • Now assistant professor at Kyung Hee University
Dr. Brieu Francois (2018-2020)
  • CMS RPC DPG trigger coordinator
  • Flavour Changing Neutral Current search
  • CERN Fellow (2020-)
Alumni (PhD)
Dr. Jiwon Park (2017-2023)
  • Search for FCNC in top quark and Higgs boson interactions
  • Search for lepton flavor violation in top production and decay
  • CMS RPC DQM developer
  • Research fellow at Deutsches Elektronen-Synchrotron (2023-)
Dr. Seohyeon An (2017-2024)
  • ttbb differential cross section measurement
  • RPC twinMux emulator for CMS PhaseII upgrade
  • RPC DQM development
  • Researcher at Pohang Accelerator Laboratory (2024-)
Alumni (MS)
Aree Lee (2015-2017)
  • ttbar cross section measurement with respect to pileup
Luu Lan (2016-2018)
  • Study of muon isolation efficiency in high jet multiplicity environment
Nakyung Kim (2017-2019)
  • ttbar cross section measurement
Sumin Jung (2017-2020)
  • RPC DQM support
  • Search for tZq FCNC
Jongwon Lim (2020-2022)
  • Search for LFV in the top quark sector with a muon and tau events
  • Tau DQM Development

Events

Links

Internal pages