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"For their leading role in the first demonstration of mixing in the BO - B-O system. The unexpectedly large value of the mixing parameter provided indirect evidence for a large top quark mass and has greatly enhanced the possibility for studying CP violation in B meson decays. This capability has encouraged a worldwide effort to determine whether the small CP violation in K decay is a reflection of a fundamental parameter characterizing transitions of quarks among the three generations."Background:
Dr. Zaitsev received his equivalent of an undergraduate degree from Moscow Engineering Physical Institute in physics in 1960 and his Ph.D. in 1968, He is currently lecturing as a professor of physics at the Moscow Physical Technical Institute.
In the 1960's, Dr. Zaitsev took part in several experiments on measurements of IT+IT- interactions at low transfer momenta. Later in the 1970's he took part in the experiments on investigation of high-energy particle interactions with nuclei. In 1978 he participated in an experiment at Fermilab on backward particle production in proton-nuclei interactions in collaboration withthe University of Pennsylvania. In 1979 he worked with DESY in Germany on the ARGUS detector as a group leader in design, creation and running of muon systems. He has published over 200 scientific articles, presented the ARGUS results at many international conferences on high-energy physics dudring the past decade, and is currently working with the HERA-B Collaboration as a coordinator of muon systems.