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Elementary Particle Theory Lab
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The lab approaches physics beyond the Standard Model of particle physics from the theoretical side.
AboutAbout the lab
Exploring the smallest building blocks of matter through theory.
The Elementary Particle Theory Lab studies elementary particles, the most fundamental building blocks of matter, and the laws that govern them.
The work is theoretical, describing the behavior of elementary particles within the framework of quantum field theory of gauge fields.
Using flavor physics and CP violation as clues, the lab works toward physics beyond the Standard Model of particle physics.
The lab also advances research on nonperturbative methods, which apply field theory to strongly interacting systems.
Key terms
- Standard Model of particle physics
- The basic theory of current particle physics, which explains matter and forces through quarks and leptons and the gauge bosons that carry the forces
- Flavor physics
- A field that studies the transitions that occur among the six types (flavors) of quarks and leptons
- CP violation
- A phenomenon in which swapping particles and antiparticles does not give the same result. It is related to why matter remained in the universe
NewsLab news
An undergraduate student received the Chiba University Faculty of Science Supporters' Association Chair's Award
Associate Professor Kitahara received the Young Scientists' Prize in the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology
A doctoral student received the Dean's Award from the Graduate School of Science and Engineering
An undergraduate student received the Chiba University President's Award
An undergraduate student received the Outstanding Poster Presentation Award at Flavor Physics Workshop 2024
ResearchResearch themes
The lab explores elementary particles and the laws governing them within the framework of quantum field theory. It pursues both phenomenological studies of elementary particles and theoretical studies of field theory itself.
*Illustrative imagePhysics Beyond the Standard Model
The lab theoretically investigates flavor physics and CP violation, exploring physics that the current Standard Model cannot fully explain.
*Illustrative imageThe Higgs Boson and Dark Matter
The lab studies the Higgs boson and dark matter from a phenomenological standpoint.
*Illustrative imageStrong Interactions and Nonperturbative Methods
This research applies field theory to strongly interacting systems. The lab theoretically investigates nonperturbative methods such as renormalization group methods and self-consistent approximation methods.
MembersFaculty
The lab's members consist of faculty, graduate students, undergraduate students, part-time lecturers, and professors emeritus.As of 2026
- Associate ProfessorAtsushi Yamada
- Associate ProfessorTeppei Kitahara
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: “3D view of an event recorded with the CMS detector in 2012 at a proton-proton centre of mass energy of 8 TeV” McCauley, Thomas; Taylor, Lucas; for the CMS Collaboration / CC BY-SA 3.0 (cropped)
- Physics Beyond the Standard Model: “StandardModel” ParticlesAndMath / CC BY-SA 4.0 (cropped)
- The Higgs Boson and Dark Matter: “Three-Dimensional Distribution of Dark Matter in the Universe ( )” NASA, ESA, and R. Massey (California Institute of Technology) / Public domain (cropped)
- Strong Interactions and Nonperturbative Methods: “Qed elementary rules” Pra1998 / Public domain (cropped)
- Related lab (素粒子実験): “FASER” Brice, Maximilien / CC BY 4.0 (cropped)
- Related lab (物性理論
（佐藤研究室） ): “HELEN target area” Colin N. Danson et al. / CC BY 4.0 (cropped) - Related lab (物性理論
（星野研究室） ): “Stickstoff gekühlter Supraleiter schwebt über Dauermagneten” Henry Mühlpfordt / CC BY-SA 3.0 (cropped) - Related lab (非線形・ソフトマター物理学): “Ripples on Mesquite Flat Sand Dunes” National Park Service / Public domain (cropped)
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