Topics

Long hot summer

3 November 1998

news5_11-98

Smooth running at CERN’s LEP electron­positron collider, now at 189 GeV collision energy (94.5 GeV per beam), is reflected in a fast climbing, integrated luminosity curve. Integrated luminosity is a measure of the number of electron­positron collisions provided for physics, and the 1998 score is already well past that of previous years. LEP runs until early November. Recent performance has yielded luminosities of more than 9×1031 per cm2 per s and an integrated luminosity of 3 inverse picobarns in a 24-hour period.

bright-rec iop pub iop-science physcis connect