Doyeong Kim

I am an experimental high-energy physicist who has contributed to two of the largest scientific collaborations ever undertaken: the ATLAS and CMS Collaborations at the Large Hadron Collider (LHC).

Following the discovery of the Higgs boson, the LHC program has entered a precision era focused on measuring its couplings to fermions and gauge bosons. I contribute to this effort by studying the properties of the Higgs boson and its couplings to other particles, as well as the mechanism of electroweak symmetry breaking through vector boson scattering (VBS) processes in complex hadronic final states. My research includes measurements of Higgs couplings to third-generation fermions and gauge bosons, such as H→ττ, and I am currently pursuing searches for H→cc to probe Higgs couplings to second-generation fermions. These analyses aim to extract subtle signals from overwhelming backgrounds and probe the Higgs sector with increasing precision.

To maximize the sensitivity of physics analyses, advancing detector performance is critical. I specialize in silicon-based detectors, including high-precision silicon trackers, fast timing detectors with few tens of picoseconds resolution, and calorimeters employing silicon photomultipliers (SiPMs). Currently, my primary focus is on the successful delivery of the Inner Tracker (ITk) Pixel Detector Upgrade for the ATLAS detector in preparation for the High-Luminosity LHC (HL-LHC) era.