1996/04/24 by Paul H. Frampton, Mark B. Wise, Brian D. Wright
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.54.5820
published as Phys.Rev. D54 (1996) 5820-5823 · 12 pages, plus 1 Postscript figure, uses revtex, Discussion of FCNC extended
arxiv created 1996/04/24 · openalex publication_date 1996/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
By extending the standard gauge group to SU(3)c\ifmmode×\else\texttimes\fiSU(2)L\ifmmode×\else\texttimes\fiU(1)Y\ifmmode×\else\texttimes\fiU(1)X with X charges carried only by the third family we accommodate the CERN LEP measurement of Rb and predict a potentially measurable discrepancy in AFBb in e+e^\ensuremath- scattering and that D0D0 mixing may be near its experimental limit. The uniqueness of our model is that the Z^\ensuremath' couplings are generation-dependent and, hence, explicitly violate the GIM mechanism, but can nevertheless be naturally consistent with FCNC constraints. Direct detection of this Z^\ensuremath' is possible but challenging.