KEK Accelerator Facility

The KEK accelerator facility was established in 1997 in a reorganization of the Institute of Nuclear Study, University of Tokyo. The nature of the equipment may be seen at their images site. The location is on the south coast of Japan.

Some discoveries at KEK

Violation of symmetry between B and anti-B

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Accelerators

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Particle concepts

Search for elementary particles

References
Blatt
Ch 16

Ohanian
Ch 46

KEK

HyperPhysics***** Quantum Physics

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The B-Factory at the KEK Accelerator Facility

The B-factory accelerator at KEK (KEKB) collides 8 billion electron volts (8 GeV) electrons with 3.5 GeV positrons to produce large number of B mesons, tau particles, and charmed particles. "Investigations of large numbers of B mesons, tau particles and charm mesons, which are produced inside an experiment at the KEKB electron-positron accelerator collider, reveal violations of the symmetry between particles and anti-particles. These are rare phenomena that occurred at an early stage of the universe, and may reveal the nature of unknown particles and new interactions. In addition, these breakdowns of symmetry may lead us to new laws of physics and an understanding of why anti-matter has disappeared from the universe."KEK)