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Nuclear and Hadron Lab
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An experimental lab that explores the strong interaction through atomic nuclei and hadrons.
AboutAbout the lab
Exploring the strong force hidden deep within matter.
The Nuclear and Hadron Lab experimentally studies interactions and the fundamental properties of many-body systems across a wide range of levels of matter: atoms, atomic nuclei, hadrons, and quarks.
In particular, it seeks to understand the strong interaction, which shows completely different faces depending on energy, from the standpoint of mesons and nucleons as well as quarks and gluons.
The lab conducts experiments using accelerator and nuclear reactor facilities in Japan and abroad, such as J-PARC and RIBF, while developing new measurement techniques and apparatus on its own.
Key terms
- Hadron
- A general term for particles made up of quarks, including protons, neutrons, and mesons
- Hypernucleus
- An atomic nucleus in which a particle containing a strange quark (a hyperon) is embedded
- Unstable nucleus
- An atomic nucleus whose balance between the numbers of protons and neutrons is broken, so it decays quickly
NewsLab news
Research by Assistant Professor Masanori Dozono was featured in a Kyoto University press release
A student received the Outstanding Presentation Award at the Physics Division 2 M1 Exchange Meeting
ResearchResearch themes
With the main goal of clarifying the fundamental properties of interactions between elementary particles and atomic nuclei, the lab studies mainly the strong interaction, using atomic nuclei and hadrons as its subjects. While developing new experimental techniques, it takes on a variety of themes using high-intensity accelerator beams and unstable nuclear beams.
*Illustrative imageStrangeness Nuclear Physics
The lab artificially creates hypernuclei, atomic nuclei in which particles containing strange quarks are embedded, and investigates their properties. By precisely measuring the forces acting between particles, it also aims to help clarify the internal structure of neutron stars.
*Illustrative imageOrigin of Hadron Mass
As part of the J-PARC E16 experiment group, the lab precisely measures the mass of hadrons inside atomic nuclei, in experiments that approach the mechanism by which matter acquires mass. The Higgs mechanism explains only a few percent of the mass of hadrons.
*Illustrative imageOrigin of Femtoscale Matter
The lab artificially produces, with accelerators, unstable nuclei that must be formed in the universe, and experimentally investigates what nuclear matter is like. It studies the equation of state of neutron matter and the mechanism by which clusters form spontaneously inside nuclear matter.
*Illustrative imageExotic Hadrons
Using the kaon beam at J-PARC, the lab produces rare particles containing two or three strange quarks, and investigates how quarks bind together inside hadrons. It also works on the search for hadrons made of four or more quarks.
MembersFaculty
The members of the Nuclear and Hadron Lab consist of faculty and students in the doctoral and master's programs.As of 2026
- ProfessorMegumi Naruki
- ProfessorKimiko Sekiguchi
- Associate ProfessorJuzo Zenihiro
- Visiting Associate ProfessorToshiyuki Gogami
- Assistant ProfessorMasanori Dozono
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “J-PARC Main Ring accelerator RF Cavity” Kestrel / CC BY-SA 4.0 (cropped)
- Strangeness Nuclear Physics: “J-PARC muon experiment area” Kestrel / CC BY-SA 4.0 (cropped)
- Origin of Hadron Mass: “J-PARC COMET Muon Transport Solenoid” Kestrel / CC BY-SA 4.0 (cropped)
- Origin of Femtoscale Matter: “Stable nuclides H to B” Akrasia25 / CC BY-SA 4.0 (cropped)
- Exotic Hadrons: “Fluxtube meson” RolteVolte / Public domain (cropped)
- Related lab (Nuclear Theory Lab): “Shape of nuclear shell” A2569875 / CC BY-SA 4.0 (cropped)
- Related lab (Nuclear Theory Lab (Yukawa Institute for Theoretical Physics)): “Table of nuclides with Halo nucleus” Chang-Bum Moon / CC BY 3.0 (cropped)
- Related lab (Particle Beam Science Lab (Wakasugi)): “ASTRID-Storage-Ring-2010” Nykj / CC BY-SA 3.0 (cropped)
- Related lab (Sugiyama Lab): “Neutrons” Lsbblsbb / CC BY-SA 4.0 (cropped)
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