ALEPH is a particle physics experiment installed at LEP, the large electron-positron collider at the CERN laboratory in Geneva/Switzerland. LEP produced its first collisions in July 1989 and since then, millions of events have been recorded by the ALEPH particle detector. Its purpose was to explore the Standard Model of particle physics and search for manifestations of new physics. 


The ALEPH experiment is a large collaboration of several hundred physicists and engineers from 32 universities and national laboratories from around the world.