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【PRESS RELEASE】SuperKEKB collider achieves the world’s highest luminosity

2020.7.1：Added a new link to related links.

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 was surpassed in 2018, when the LHC proton-proton collider at the European Organization for Nuclear Research (CERN) overtook the KEKB luminosity at 2.14×1034 cm-2 s-1. SuperKEKB’s recent achievement returns the title of world’s highest luminosity colliding-beam accelerator to KEK.

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UTokyo and KEK sign MoU to promote Hyper-Kamiokande project

The University of Tokyo
High Energy Accelerator Research Organization (KEK)
Japan Proton Accelerator Research Complex (J-PARC) Center

The University of Tokyo and High Energy Accelerator Research Organization (KEK) signed a memorandum of understanding (MoU) which aimed to strengthen the existing MoU between Institute for Cosmic Ray Research (ICRR), UTokyo and Institute of Particle and Nuclear Studies (IPNS), KEK by establishing official organizations to promote the Japan-led Hyper-Kamiokande international scientific research project, in May 2020.

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【PRESS RELEASE】T2K Results Restrict Possible Values of Neutrino CP Phase - Published in Nature, the results are a major step forward in the study of difference between matter and antimatter -

The T2K Collaboration has published new results showing the strongest constraint yet on the parameter that governs the breaking of the symmetry between matter and antimatter in neutrino oscillations. Using beams of muon neutrinos and muon antineutrinos, T2K has studied how these particles and antiparticles transition into electron neutrinos and electron antineutrinos, respectively. The parameter governing the matter/antimatter symmetry breaking in neutrino oscillation, called δcp phase, can take

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【WEB RELEASE】Belle II explores new “portal” into dark matter - First results from the Belle II Experiment

The Belle II international collaboration has published its first results in a paper selected as an Editors’ Suggestion in Physical Review Letters. The paper reports the first search for a new type of elementary particle that may act as a “portal” between ordinary matter and dark matter, which is understood to make up some 85% of the metter in the universe.

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KEK-TRIUMF Exchange Program for Early Career Researchers successfully concluded

KEK and TRIUMF jointly organised the KEK-TRIUMF Exchange Program for Early Career Researchers; EPECR. Three young researchers from TRIUMF, Canada’s particle accelerator centre, visited the KEK Institute of Particle and Nuclear Studies (IPNS). This program aims to foster early career researchers who will play a key role in accelerator science and its related fields, and make new collaborations between KEK and TRIUMF (refer to TRIUMF website: https://www.triumf.ca/node/26058 ).

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