The experimental high energy program at LSU started in 1979.  In our first experiment, we studied electron-positron collisions at the Cornell Electron Storage Ring(CESR).  The experiment provided important information on the properties of the b quark by studying the upsilon resonances which are 3S bound states of a b quark and an anti-b quark.   The experimental high-energy group subsequently participated in the AMY experiment at the TRISTAN electron-positron storage ring in Japan and the ZEUS experiment at the HERA electron-proton collider in Germany.  Presently, Dr. McNeil is participating in the L3 experiment at the LEP electron-positron collider at the CERN laboratory in Geneva, Switzerland.  Recent upgrades to the LEP accelerator have allowed it to operate in a previously unexplored energy region.  It is thus an exciting place to search for possible new particles and phenomena.  The L3 detector has great potential for physics discovery with its excellent resolution in gamma, e, and mu measurements.  LEP is also a good place to study electro-weak interactions, QCD, and gg interactions at high energy.  Data taking in the new energy regime began in November 1995 and will continue until Fall 2000.
    Professors Imlay and Metcalf have played a major role on the LSND neutrino experiment at the LAMPF facility at Los Alamos National Laboratory.  This experiment is primarily a search for neutrino oscillations.  However, it has also contributed significantly to our knowledge of low energy neutrino cross-sections.  In fact, the first published result from the experiment, on the numu12C cross-section near threshold, indicated a major discrepancy with existing theoretical models and has led to a lot of recent work on the process.  By far the most exciting result of LSND to date is the evidence it has found for neutrino oscillations.  This signal has persisted through six years of data-taking and is clearly not a statistical fluctuation nor a cosmic-ray background.  If subsequent work confirms that it is indeed due to neutrino oscillations, it will have profound implications not only for the standard model of particle physics but also for many areas of astrophysics.  In December 1998, LSND stopped taking data and is now finishing up its analyses of neutrino cross-sections and possible neutrino oscillations.
    The experimental high energy group is also involved in experiments that are in the design and/or construction phase.

Current Experiments