The main focus for CERN at present is with the Large Electron-Positron Collider
(LEP), where measurements unsurpassed in quantity and quality are testing the best description of sub-Nature, the Standard Model, to a fraction of 1% soon to reach one part in a thousand.
The International Linear Collider is a proposed new electron-positron collider
allowing physicists to explore energy regions beyond the reach of today's accelerators.
Vivid but sparse signs of the so-called Higgs boson at the Large Electron-Positron Collider
(LEP) in Switzerland have also sparked a desperate race against time to catch further glimpses before researchers pull the plug on the 11-year-old machine.
Going back through the data from an earlier run of CERN's Large Electron-Positron Collider
(LEP), researchers have found no evidence of such extradimensional influences at up to an energy of 4 TeV, Cheung told SCIENCE NEWS.
CERN is busy building a huge new accelerator project, the Large Electron-Positron collider
(LEP), and is doing it under severe budget constraints.
In that electron-positron collider
, expected to be ready by late 1989, two particle beams constantly circulate in opposite directions within a ring 17 miles in circumference.
Z[degree] particles were produced, first at the Stanford Linear Collider, then at the Large Electron-Positron collider
at CERN (135: 245; 136: 159).
By observing the many ways in which a particle known as the Z[degree] can decay into other particles, researchers working with the ALEPH detector at the Large Electron-Positron collider
in Geneva, Switzerland, have now obtained the msot stringent limit yet excluding the existence of a fourth generation of elementary particles.