Professor Jonghee Yoo, Department of Physics & Astronomy, Seoul National University

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		Jonghee Yoo Department of Physics & Astronomy at Seoul National University Looking deep into the night sky, there are countless stars, myriad shapes of gas clouds, pulsars, supernovae, and galaxies. However, it is now well established that the Universe is primarily composed of what we cannot see: dark energy and dark matter. Astrophysical observations indicate that 68% of the Universe is made up of dark energy, 27% is dark matter, and the remaining 5% is ordinary matter. Therefore, probing the dark components of the Universe is the most prominent subject in modern particle physics. Our lab’s scientific interests are in experimental particle and astroparticle physics, with a focus on the invisible mass component of the universe, including dark matter and neutrinos. The existence of dark matter and massive neutrinos leads to profound consequences for the evolution of the Universe. The two are similar in many ways, as they both exist everywhere and interact weakly. The Standard Model of particle physics does not accommodate a suitable dark matter candidate. Therefore, the presence of dark matter is crucial phenomenological evidence for physics beyond the Standard Model. Our approach to these profound subjects is to probe the particle nature of dark matter through direct detection and to study neutrino physics using state-of-the-art technologies. Special Issues • Complete Hyper-Kamiokande Cavern Excervation (Donga Science) 2025-08-05 • Re-remembering Ben Lee (Physics Today) 2025-05-08 • Donghae Deep-Sea Neutrino Observatory (Donga Ilbo) 2025-05-12 • Korea Neutrino Observatory (Youtube clips)

Jonghee Yoo

Department of Physics & Astronomy at Seoul National University

Looking deep into the night sky, there are countless stars, myriad shapes of gas clouds, pulsars, supernovae, and galaxies. However, it is now well established that the Universe is primarily composed of what we cannot see: dark energy and dark matter. Astrophysical observations indicate that 68% of the Universe is made up of dark energy, 27% is dark matter, and the remaining 5% is ordinary matter. Therefore, probing the dark components of the Universe is the most prominent subject in modern particle physics.

Our lab’s scientific interests are in experimental particle and astroparticle physics, with a focus on the invisible mass component of the universe, including dark matter and neutrinos. The existence of dark matter and massive neutrinos leads to profound consequences for the evolution of the Universe. The two are similar in many ways, as they both exist everywhere and interact weakly. The Standard Model of particle physics does not accommodate a suitable dark matter candidate. Therefore, the presence of dark matter is crucial phenomenological evidence for physics beyond the Standard Model. Our approach to these profound subjects is to probe the particle nature of dark matter through direct detection and to study neutrino physics using state-of-the-art technologies.

Special Issues

• Complete Hyper-Kamiokande Cavern Excervation (Donga Science) 2025-08-05

• Re-remembering Ben Lee (Physics Today) 2025-05-08

• Donghae Deep-Sea Neutrino Observatory (Donga Ilbo) 2025-05-12

• Korea Neutrino Observatory (Youtube clips)


		08826 서울특별시 관악구 관악로 1, 서울대학교 물리천문학부 Department of Physics & Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea

08826 서울특별시 관악구 관악로 1, 서울대학교 물리천문학부

Department of Physics & Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea