Professors of Physics, Graduate School of Science

Professors with 「*」 do not take graduate students.
Professors with 「#」 do not take master's graduate students.
Professors with 「!」 has spesial report.
A2 Shoji ASAI Department of Physics
A2 Taku GUNJI Center for Nuclear Study Quark and Hadron Physics with high-energy heavy-ion collisions: By conducting high-energy heavy-ion collisions at the ALICE experiment at the CERN-LHC, we are studying [1] the formation of the Quark-Gluon-Plasma (new phase of matter existed 10 micro-sec after the BigBang), [2] properties of the Quark-Gluon-Plasma, [3] mechanisms of phase transition to the Quark-Gluon-Plasma and hadronic matter, [4] color confinement and chiral symmetry restoration as the fundamentals of QCD. We are developing another frontier of heavy-ion collisions to explore the properties of the Quark-Gluon-Plasma and hadronic matter under extremely high densities.
A2 Takeo HIGUCHI Kavli Institute for the Physics and Mathematics of the Universe In quest of new physics beyond the Standard Model of particle physics that can account for yet-unraveled mysteries in the Universe like dark matter, we are working on a high-energy accelerator experiment Belle II operated in Tsukuba, Japan. Of several research topics available in Belle II, we are attracted to and concentrating on precise measurement of the sides and interior angles of the Unitarity Triangle formed by the Quark-Mixing matrix and detection of the new physics by comparing the measurement with the Standard Model prediction. We have been and will be working on the vertex detector and data acquisition system for Belle II as well.
A2 Nobuaki IMAI Center for Nuclear Study Nuclear structure of neutron-rich nuclei which will be produced by RIPS or BigRIPS at RIBF are to be studied by employing the low-energy nuclear reactions such as proton resonance elastic scattering. In particular, the nuclei around 32Mg where the nuclear structure suddenly changes are being studied. This experiment can be related to an unknown nuclear force which breaks the isospin symmetry. We are also developing devices to produce a high spin isomer target of178m2Hf, which will be synthesized, and then purified by using the laser resonant ionization. When it is succeeded, long-standing dream of nuclear physics, production of hyper deformation, torus shape of nucleus, would come true.
A2 Masaya ISHINO International Center for Elementary Particle Physics [1] Searching for new elementary particles using Large-Hadron-Collider. Through the precise measurement of the new particles, unveil the physics beyond the standard-model. [2] To maximize the possibility to find new particles, develop a new technology on detector, trigger and software and deploy them to the real experiment.
A2 Tadashi KOSEKI High Energy Accelerator Research Organization Studies on high energy particle accelerators. The main subjects are beam dynamics of linac/synchrotrons and R&D’s on high intensity accelerator components at the Japan Proton Accelerator Research Complex, J-PARC.
A2 Tsutomu MIBE High Energy Accelerator Research Organization I aim to develop a firm experimental basis of the physics beyond the standard model by using precision measurement on physical quantities related with spin. My approach towards this goal is to look for signals in quantum loops. This approach has been powerful to either find a signature or constrain new models in the past, and now becomes one of frontiers in the field of experimental particle physics. My current research is the measurement of anomalous magnetic moment and electric dipole moment of muon at J-PARC. This includes the world-first realization of muon cooling, acceleration, and particle tracking detector with super-high alignment precision.
A2 Toshinori MORI International Center for Elementary Particle Physics Exploring the mysteries of the Universe by discoveries and studies of new phenomena and particles. In particular, currently working on an international experiment to investigate supersymmetric grand unification of forces and the origin of neutrino masses through rare decays of muons (the MEG and MEG II Experiment). Also working on experimental researches in electron-positron collisions of the world's highest energy at the International Linear Collider (ILC) to study gauge interactions, symmetry breaking (Higgs bosons), and grand unified theories.
A2 Yasuhiro NAKAJIMA Department of Physics My research focuses are studies of nature of neutrinos as elemental particles, as well as astrophysical studies with neutrinos. In particular, we are aiming for the world first observation of Diffuse Supernova Neutrino Backgrounds with the Gadolinium-loaded Super-Kamiokande detector (SK-Gd). Our another major goal is to study matter-antimatter asymmetry with accelerator neutrinos produced at J-PARC. In addition, we are conducting researches towards observations at the Hyper-Kamiokande experiment.
A2 Yasuyuki OKUMURA International Center for Elementary Particle Physics We participate in the ATLAS experiment and carry out research through international collaboration and in the midst of international competition with the aim of discovering signs of new physics in experimental data. By analyzing experimental data, we are testing hypotheses regarding new phenomena beyond the Standard Model of the particle physics. In addition to data analysis, we also conduct wide-ranging research activities, such as operating and making improvements to the detector and hardware trigger of the ATLAS experiment and developing high-speed trigger electronics with cutting-edge technologies. One of the most important objectives of our group is to maximize the potential for new physics discoveries at the LHC through my work both with hardware and software.
A2 Wataru OOTANI International Center for Elementary Particle Physics The research interest of our lab is in experimental particle physics with particle accelerators aiming at understanding the fundamental law of the universe. The main projects are as follows. (1) MEG/MEG II experiment in search for rare muon decay with the highest sensitivity utilising the world’s most intense muon beam to study new physics beyond the standard model such as SUSY-GUT. We are also working on R&D of new detector technologies for next-generation experiments with even higher sensitivities. (2) R&D toward the realisation of the International Linear Collider (ILC), which is a future energy-frontier electron-positron collider.
A2 Kyoichiro OZAWA High Energy Accelerator Research Organization Experimental study of non-perturbative QCD: 1) Study of quark-gluon-plasma and hadronic matter under high-temperature and high density condition at Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. 2) Study of mechanism of hadronic mass generation. I’m going to perform an experiment at J-PARC to study the mechanism of hadronic mass and interaction with “QCD vacuum”. In addition, R&D for the new detector at J-PARC is on-going.
A2 Naohito SAITO High Energy Accelerator Research Organization naohito.saito(AT) Spin as a tool to elucidate "origin of matter" and the symmetries of space-time We are studying the origin of matter as well as the symmetries in the space-time using "spin" of an elementary particle as a probe. With the high-energy polarized proton collider at RHIC of Brrokhaven National Laboratory (NY), we have been investigating the spin structure of the nucleon. In addition, we have started a new project to measure dipole moments of the muon with super-precision by creating a ultra-cold muon beam at J-PARC. The measurement aims a stringent test of the standard model as well we a search for CP violation in the lepton sector.
A2 Yasuhiro SAKEMI Center for Nuclear Study To explore the mechanism responsible for the generation of observed matter-antimatter asymmetry in the Universe, the research on fundamental symmetry violations and various fundamental interactions using the laser cooled and trapped heavy elements is being promoted. The construction of a facility containing high density of laser cooled radioactive atoms is in progress, and it serves as a center for carrying out several studies on fundamental symmetries.
A2 *# Hiroyoshi SAKURAI Department of Physics Heavy Ion Nuclear Physics Research activities covered by our laboratory are the field brought out by the advent of the radioactive nuclear beams. Special emphasis is placed on exotic properties and phenomena for nuclei with extreme isospin. Our research programs are coordinated to exploit these new opportunities and are directed to subjects related to 1) Study of nuclear structure and dynamics of unstable nuclei through development of new methods utilizing fast RI beams, 2) Exploration into limit of nuclear existence by development of RI beams, and 3) Reaction mechanism of heavy ion induced reactions. The experiments are mainly performed using the radioactive beam facility at RIKEN.
A2 Ryu SAWADA International Center for Elementary Particle Physics Experimental elementary particle physics. I participate the LHC ATLAS experiment at CERN to discover the new physics beyond the standard model by searching for new particles such as supersymmetric particles, dark matter and new long-lived particles. For improving the sensitivity of searches, I study applications of new techniques such as deep-learning and quantum computing in high-energy physics researches. I also study on the new physics reach of the future circular collider, which is a proposed 100 TeV hadron collider at CERN.
A2 *# Susumu SHIMOURA Center for Nuclear Study Studying various properties of exotic nuclei, which have different numbers of neutrons and protons from those of stable nuclei, by using nuclear reactions with secondary beams of exotic nuclei. Wave functions of loosely bound nucleons, change of magic numbers, exotic excitation modes, and reaction mechanisms are studied by utilizing suitable selectabilities of nuclear reactions by selecting incident energies and targets.
A2 Junichi TANAKA International Center for Elementary Particle Physics Experimental particle physics: we aim to understand how to describe the universe with a few fundamental formula of elementary particles through experiments of high energy accelerators. We currently join LHC ATLAS experiment at CERN and search for additional Higgs particle, SUSY, extra dimension and so on, that is, the BSM physics. We also work on R&D of high-speed data transfer, energy reconstruction algorithm@FPGA etc for the ATLAS LAr EM calorimeter upgrade. In addition, we are interested in the future collider, for example, 100TeV hadron machine and just have started some studies for it.
A2 Koji TERASHI International Center for Elementary Particle Physics Experimental particle physics and applications of quantum information: The main researches are twofold: 1) Search for new phenomena and perform precise measurements of the Standard Model processes using the ATLAS detector at the CERN-LHC. We are also working on the scenario of Supersymmetry searches at a future 100 TeV hadron collider. 2) Explore the applications of quantum information science to fundamental physics and industry. We are interested in the algorithmic development of quantum machine learning and quantum simulation, and the optimization of quantum circuit design for the present and near-term quantum computers.
A2 Yutaka USHIRODA High Energy Accelerator Research Organization The main subject of my research is to search for New Physics beyond the Standard Model and to study the origin of CP violation. These studies are possible by precision measurements of decay processes of B meson, D meson and tau lepton produced in the world highest luminosity collisions of electron and positron by KEKB accelerator and up-coming SuperKEKB accelerator at KEK in Tsukuba. Also engaged in are practical researches in order to improve quality of data not limited to the Belle II detector, but also in the boundary region of machine and detector, which are unique at the host laboratory.
A2 Kentaro YAKO Center for Nuclear Study My research subject is nuclear collective motion, especially the spin-isospin oscillation. Our group engages in producing the excited nuclei via charge exchange or other reactions to study their structure using ion beams of intermediate energies (several hundred MeV per nucleon).
A2 Hidetoshi YAMAGUCHI Center for Nuclear Study The main research is with the low-energy RI beam separator "CRIB", which was installed in the RIBF facility of RIKEN Nishina Center by CNS (Center for Nuclear Study) of Univ. of Tokyo. CRIB, producing low-energy and high-intensity RI beam via direct reactions, is a unique apparatus among low-energy RI beam facilities all over the world. Making use of the distinctive features of CRIB, we are performing unique experimental studies on important reactions in nuclear astrophysics and exotic nuclear structure.
A2 *# Satoru YAMASHITA International Center for Elementary Particle Physics
A2 Masashi YOKOYAMA Department of Physics Experimental particle physics. Study of neutrino oscillation using artificial neutrino beams (T2K and Super-Kamiokande experiments). Construction of Hyper-Kamiokande detector. Development of new neutrino detectors.
Professors with 「*」 do not take graduate students.
Professors with 「#」 do not take master's graduate students.
Professors with 「!」 has spesial report.