The CLEO experiment at the electron-positron collider CESR in Cornell
is a general purpose particle detector with vertex and tracking
chambers, calorimeters and a 1.5 Tesla superconducting magnet. With
the CESR accelerator operating at energies around the Upsilon(4S)
resonance, more than 16 Million B meson pairs have been recorded. The
study of rare and hadronic B decays allows us to explore many fields
of particle physics such as the search for CP-violation and
non-standard model physics, tests of factorization in weak decays and
the study of hadronic resonances.