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KMI had the International Advisory Board (IAB) Meeting online on Monday, December 14th, 2020.KMI has the IAB meeting every two years to report KMI’s activities and discuss our next step for the future of KMI.  This year, KMI welcomed two outstanding scientists as new members of the International Advisory Board: Prof. Hitoshi Murayama from University of California, Berkeley and Prof. Misao Sasaki from Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo. We were able …

Division of Theoretical Studies in KMI seeks to fill a full-time, non-tenure-track, designated Assistant Professor position.   Please read PDF for more details. PDF KMI Division of Theoretical Studies (KMI 2020-04)

Division for Experimental Studies in KMI seeks to fill a full-time, non-tenure-track, designated Associate Professor or designated Assistant Professor position.   Please read PDF for more details. PDF KMI Division for Experimental Studies (KMI 2020-03)

Dr. Tomohiro Abe from the Division of Theoretical Studies won the 15th Seitaro Nakamura Award of the year from the Particle Research Scholarship Foundation. The award named after Dr. Seitaro Nakamura (1913-2007), who had produced substantial researches on theoretical particle physics particularly on two-meson and beta decay, was established in 2006 in order to encourage young researchers for their future endeavors in particle physics and the related field. Awarded Paper: “The effect of the early kinetic decoupling in a fermionic …

New results from the Large Hadron Collider (LHC) experiments were announced in the press release by CERN on 3rd August followed by the press release by Nagoya University on 11th August. Nagoya University participates in the ATLAS experiment at LHC. M. Tomoto (Designated Professor, Graduate School of Science and KMI), Y. Horii (Lecturer, Graduate School of Science), Y. Kano (Research Fellow, Graduate School of Science), and T. Kawaguchi (Graduate Student, Graduate School of Science) contributed to this research. The ATLAS …

A group of researchers including scientists from Nagoya University, the J-PARC Center, Tokyo Institute of Technology, Osaka University, Kyushu University, and Japan Atomic Energy Agency study the angular distribution of gamma-rays emitted from a neutron capture reaction with polarized neutrons. This is the basis of CP-violation research experiments using nuclear reactions. In particle physics CP-violation is one of the origins of the matter universe; however, only tiny violations have thus far been observed. Unknown CP-violating processes are sought through various …

Assistant Professor Takeshi Kobayashi of the Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, proposes that an elementary particle called the axion could have been the origin of the cosmic structure of our universe. Astrophysical studies in the past decades have established that the cosmic structure, including galaxies and galaxy clusters, arises from tiny fluctuations in the energy density when the universe was young; however the origin of this primordial density fluctuation still remains one …

Japan’s High Energy Accelerator Research Organization (KEK) has been steadily improving the performance of its flagship electron-positron collider, SuperKEKB, since it produced its first electron-positron collisions in April 2018.  At 20:34 on 15th June 2020, SuperKEKB achieved the world’s highest instantaneous luminosity for a colliding-beam accelerator, setting a record of 2.22×1034 cm-2 s-1. Previously, the KEKB collider, which was SuperKEKB’s predecessor and was operated by KEK from 1999 to 2010, had achieved the world’s highest luminosity, reaching 2.11×1034 cm-2 s-1. KEKB’s record …

A group of researchers including scientists from the RIKEN Nishina Center for Accelerator-Based Science, University of Tokyo, Nagoya University, and the Japan Atomic Energy Agency (JAEA) used the spin-polarized Relativistic Heavy Ion Collider at Brookhaven National Laboratory in the United States to show that in polarized proton-proton collisions, the neutral pions in the very forward area of collisions—where direct interactions involving quarks and gluons are not applicable—still have a large degree of left-right asymmetry. This finding suggests that the previous …

Scientists from the international XENON collaboration, an international experimental group including the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), University of Tokyo; the Institute for Cosmic Ray Research (ICRR), University of Tokyo; the Institute for Space-Earth Environmental Research (ISEE), Nagoya University; the Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University; and the Graduate School of Science, Kobe University, announced today that data from their XENON1T, the world’s most sensitive dark …