University of Pennsylvania
Department of Physics and Astronomy
High Energy Physics Seminar
Joao Guimaraes da Costa
Abstract for:
b' Quark: The Next Generation
The Standard Model (SM) with three generations of quarks and leptons
is in excellent agreement with all experimental data available today.
However, the model has several unsolved mysteries, among others it
does not explain the fermion family replication. This seminar will
review the current experimental constraints on the existence of an
extra charge -1/3 quark (b'). A report on the latest search for pair
production of b' quarks using the CDF data will be presented. The
quarks are assumed to decay via the flavor-changing neutral current
process b'-->bZ, which can be the dominant b' decay mode for a wide
range of b' masses. The results of this search extend the exclusion
region for FCNC decays of a b' quark by more than a factor of 2.