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High Energy Physics Seminar Abstract: Masahiro Morii
University of Pennsylvania
Department of Physics and Astronomy
High Energy Physics Seminar
B physics beyond CP violation: Semileptonic B decays
Masahiro Morii
Harvard University
Abstract
The success of the B Factories at SLAC and KEK has advanced
our knowledge of CP violation, a prerequisite for the creation
of the matter-dominant universe. Steady increase of data has
brought a new era of precision CP measurements, in which the
unitarity of the Cabibbo-Kobayashi-Maskawa matrix is scrutinized
for signs of New Physics. One of the crucial pieces of information,
surprisingly, comes not from CP violation but from studies of
semileptonic decays of the B mesons. I will discuss how various
measurements of the B semileptonic decays mesh together to
determine the size of the smallest CKM matrix element |Vub|,
and how such measurements are made possible through progress
in the theory of B decays.