Friday, January 30, 2004, 16:00
WHGA Auditorium
Prof. A. Bay, LPHE / EPFL
Abstract:
The phenomenon of CP violation was first observed in neutral kaons
decays in 1964. In 1967 A. D. Sakharov realized that CP violation was a
necessary ingredient to explain the matter domination over antimatter in
the Universe. In 1972, while only 3 quarks were known, M. Kobayashi and
T. Maskawa introduced a model with 6 quarks, capable to generate the
observed CP violation. The 3 extra quarks were subsequently discovered
and they are now incorporated in the Standard Model of particles.
Recently BaBar and Belle demonstrated that a large CP asymmetry also
appears in the decay of neutral B-mesons, in agreement with the
Kobayashi-Maskawa theory. I will the review the recent results of Belle.
In the near future, the LHCb experiment will exploit the huge amount of
b quarks produced at the CERN Large Hadron Collider to perform high
precision measurements and to challenge the Standard Model.