The contents are mostly in Japanese, but are freely accessible from all over the world

The contents are mostly in Japanese, but are freely accessible from all over the world

We will have a live webcast of the roll-in of Belle II on Niconico Live, the largest webcasting service in Japan.

The Belle II experiment is an international collaboration hosted by KEK in Tsukuba, Japan.

The experiment explores the mysteries of elementary particles and the universe with the world-most-powerful particle accelerator.

One of the goals is to reveal new physics beyond the Kobayashi-Maskawa theory, which was experimentally verified by the B-factories in Japan and the US and lead to the 2008 Nobel prize in Physics for Kobayashi and Maskawa.

The Belle II detector has outer dimensions of 8 m x 8 m x 8 m and weighs about 1400 tons ! This huge detector will be moved to its final position at the collision point and integrated with the SuperKEKB accelerator. Since the procedure is very delicate, it will take an entire day to move only 13 m.

If successful, this will be a great milestone towards the beginning of the Belle II experiment. Let’s watch how it goes together !!


Date & Time

  • Date : April 11th (Tue)
  • Time : 9:00 - 17:00 (JST)

Webcast URL

※ The contents are mostly in Japanese, but are freely accessible from all over the world.

Invited guests (titles omitted)

  • Tatsuo Igarashi (Mayor of the Tsukuba city)
  • Hiroshi Ooguri (Director and Fred Kavli Professor of California Institute of Technology, Principal Investigator of Kavli Institute for the Physics and Mathematics of the Universe, President of Aspen Center for Physics)
  • Kengo Komatsu (Editing Assistant Director, Newton Press)
  • Ryosuke Shibato (President, Academist Co. Ltd.)
  • Kaoru Takeuchi (Science writer)
  • Yuji Hayashi (Chief editor, Daily Portal Z)
  • Rey.Hori (CG illustrator)

Video commentaries from (titles omitted)

  • Takaaki Kajita (Director, Institute for Cosmic Ray Research, University of Tokyo, 2015 Nobel laureate)
  • Makoto Kobayashi (Honorary Professor Emeritus, KEK, 2008 Nobel laureate)
  • Toshihide Maskawa (Director General, Kobayashi-Maskawa Institute, Nagoya University, 2008 Nobel laureate)
  • Hitoshi Murayama (Director General, Kavli Institute for the Physics and Mathematics of the Universe, University of Tokyo)

The Belle II experiment

An introduction to the Belle II experiment is available on YouTube.


Related pages

Also please check the following Belle II official websites for the latest and more detailed information.