Hongkai Liu
Associate Professor, Physics Program
Office: A303, North Campus
Dr. Hongkai Liu received his Ph.D. in Physics from the University of Pittsburgh in 2021. From July 2021 to June 2024, he worked as a postdoc at the Technion. From August 2024 to July 2026, he was a postdoc at Brookhaven National Laboratory in the United States.
Despite the remarkable successes of the Standard Model (SM) in explaining and predicting a wide range of experimental observations, several fundamental questions remain unanswered. For instance, the origin of neutrino masses and why they are significantly smaller compared to other fermions in the SM is still unknown. Additionally, we do not know the nature of dark matter (DM), the origin of baryon asymmetry in the universe, and why the neutron electric dipolemoment is so tiny. To find answers to those fundamental questions, Dr. Hongkai Liu’s research is currently focused on neutrino physics, dark matter, collider phenomenology, Effective Field Theory, and scattering amplitudes. He has a wide range of interests from nuclear physics to cosmology as well.
- Neutrino Physics
- Dark Matter
- Collider Phenomenology
- Effective Field Theory
- Scattering Amplitudes
Nonstandard neutrino interactions at COHERENT, DUNE, T2HK and LHC. Tao Han, Jiajun Liao, Hongkai Liu, Danny Marfatia. JHEP 11 (2019) 028.
Scalar and tensor neutrino interactions. Tao Han, Jiajun Liao, Hongkai Liu, Danny Marfatia. JHEP 07 (2020) 207.
Anomalous dimensions from gauge couplings in SMEFT with right-handed neutrinos. Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia. JHEP 02 (2021) 015.
Electroweak phase transition with an SU(2) dark sector. Tathagata Ghosh, Huai-ke Guo, Tao Han, Hongkai Liu. JHEP 07 (2021) 045.
B →D(∗)ℓX decays in effective field theory with massive right-handed neutrinos. Alakabha Datta, Hongkai Liu, Danny Marfatia. Phys.Rev.D 106 (2022), L011702.
An EFT hunter’s guide to two-to-two scattering: HEFT and SMEFT on-shell amplitudes. Hongkai Liu, Teng Ma, Yael Shadmi, Michael Waterbury. JHEP 05 (2023) 241.
A Guide to Diagnosing Colored Resonances at Hadron Colliders. Tao Han, Ian Lewis, Hongkai Liu, Zhen Liu, Xing Wang. JHEP 08 (2023) 173.
Probing axion-like particles at the Electron-Ion Collider. Reuven Balkin, Or Hen, Wenliang Li, Hongkai Liu, Teng Ma, Yotam Soreq, Mike Williams. JHEP 02 (2024) 123.
Electron-ion collider as a discovery tool for invisible dark bosons. Hooman Davoudiasl, Hongkai Liu. Phys.Rev.D 112 (2025) 7, 075001.
Probing Top Quark – Electron Interactions at Future Colliders. Luigi Bellafronte, Sally Dawson, Pier Paolo Giardin, Hongkai Liu. Phys.Rev.Lett. 135 (2025) 25, 251801.
Weak Charge Form Factor Determination at the Electron-Ion Collider. Hooman Davoudiasl, Hongkai Liu, Sonny Mantry, Ethan T. Neil. Phys.Rev.D 113 (2026) 5, L051301.