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Seminar Abstract
November 18, 2005
"Matter and Antimatter: Asymmetry versus Symmetry"
Professor Mikhail Shaposhnikov
Institute of Theoretical Physics and
Laboratory for Particle Physics and Cosmology
École Polytechnique
Lausanne, Switzerland
Most elementary particles, such as the proton, neutron and electron, have counterpart antiparticles with exactly the same mass as the particles but opposite electric, baryonic or leptonic charge. Aside from the sign of the charge, the properties of particles and antiparticles are almost the same, with a tiny difference seen in particle physics experiments. How did it happen that our Universe contains only matter and no antimatter? In this talk, I will review the underlying physics and discuss a possible answer to this fundamental question.
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Co-sponsored by the Departments of Physics, Mechanical Engineering, and Mathematics, with financial support from the Cooperative Sponsorship Committee.
