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Aoki Lab
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The lab is an experimental particle physics lab that takes on the mysteries of the universe through rare muon processes.
AboutAbout the lab
Closing in on the mysteries of the universe by measuring rare processes
The lab studies particle physics experimentally.
Focusing on the muon, the second generation of charged leptons, the lab seeks to clarify what was happening in the hot early universe.
Through research that measures phenomena occurring only very rarely (rare processes), the lab takes on the mysteries of the universe.
The lab also works on technology for producing large numbers of muons and on advanced radiation detector technology.
Key terms
- Muon
- One of the elementary particles. It is the second generation of charged leptons.
- Rare processes
- Phenomena that occur only very rarely. The rarer the process, the better it reveals the influence of particle reactions at higher energies.
- Standard Model
- The established theory of particle physics. It cannot explain the absence of antimatter in the universe or dark matter.
NewsLab news
A doctoral student received the Outstanding Poster Award at the COMET collaboration meeting
A paper by Associate Professor Ueno and colleagues was published in Journal of Instrumentation
A student received the Osaka University Outstanding Research Award for Female Graduate Students
ResearchResearch themes
Within experimental particle physics, the lab takes on the mysteries of the universe by measuring phenomena that occur only very rarely (rare processes). Its research themes include studies of muon-to-electron conversion (COMET and DeeMe experiments), precision measurement of the pion decay branching ratio (PIENU experiment), interdisciplinary research using MuSIC, and the development of next-generation muon and neutrino sources (PRISM/nuSTORM).
*Illustrative imageExploring How the Universe Came to Be through Elementary Particles
The Standard Model of particle physics was completed with the discovery of the Higgs boson in 2012, but it cannot explain the absence of antimatter in the present universe, dark matter, or dark energy. Research on elementary particles also offers a glimpse of what happened in the early universe.
*Illustrative imageTaking On the Mysteries of the Universe by Measuring Rare Processes
Experimental particle physics has two approaches: accelerating particles to high energies to search for new particles and reactions, and measuring phenomena that occur only very rarely. The lab takes on the mysteries of the universe through the latter, the study of rare processes.
*Illustrative imageMeasurement Techniques for Capturing New Phenomena
Discovering a new phenomenon that no one has ever seen requires entirely new experimental methods and techniques. The lab also researches cutting-edge radiation measurement technology, data processing technology, and quantum beam technology.
MembersFaculty
The lab's members consist of faculty, Project Assistant Professors, doctoral, master's, and undergraduate students, and secretaries.As of 2026
- ProfessorMasaharu Aoki
- Associate ProfessorKazuki Ueno
- Assistant ProfessorAkira Sato
- Project Assistant ProfessorRyo Nagai
VoicesStudent voices
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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: “Argus Detector at DESY 2015” Aleksander Mielczarek / CC BY-SA 4.0 (cropped)
- Exploring How the Universe Came to Be through Elementary Particles: “Particle Physics The Standard Model. CERN accelerator research so far, backs the Standard Model of Particle Physics. ( )” Laura Gilchrist from Kansas City, United States / CC BY 2.0 (cropped)
- Taking On the Mysteries of the Universe by Measuring Rare Processes: “Compact Muon Solenoid experiment” SimonWaldherr / CC BY-SA 4.0 (cropped)
- Measurement Techniques for Capturing New Phenomena: “Collider Detector at Fermilab (CDF) silicon vertex detector cross section” Z22 / CC BY-SA 4.0 (cropped)
- Related lab (南條グループ（素粒子実験）
): “ATLAS CERN” Aruminska / CC BY-SA 4.0 (cropped) - Related lab (板橋グループ（原子核実験）
): “ZEUS-Detektor 3D-Grafik” DESY-Kommunikation / CC BY-SA 4.0 (cropped) - Related lab (工藤グループ（量子物質開発グループ）
): “Magnetic Levitation Experiment, Science Gallery Dublin, Ireland” Maria Delaney / CC BY-SA 4.0 (cropped)
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