Thursday, May 11, 2006, 16:00
OSGA/E6
D. Dubbers, Heidelberg University
Abstract:
The CKM matrix parametrizes the weak charged-current interaction of
quarks. The Standard Model requires this quark-mixing matrix to be
unitary. In recent years high-precision beta-decay data from neutrons,
pions, nuclei and strange particles indicated that something was wrong
with the unitarity of this matrix. The field requires input from studies
relying on vastly differing methods of experimentation, as well as from
theory, and a picture of the current state of discussion on this subject
will be drawn.