New bounds on the mass of a b' quark
arXiv:hep-ph/0311047
Abstract
In this work we present limits on a sequential down-type quark, b', based on the most recent DELPHI data. Using all available experimental data for m_b' > 96 GeV we conclude that a sequential four generations model is far from being experimentally excluded.
Presented by R. Santos at XXVII International Conference of Theoretical Physics, `Matter To The Deepest', Ustron, 15-21 September 2003, Poland. To appear in Acta Physica Polonica, http://th-www.if.uj.edu.pl/acta/