arXiv:hep-ph/9604260·v2·High Energy Physics — Phenomenology
An Elusive Z' Coupled to Beauty
Paul H. Frampton(1)🇺🇸 · Mark B. Wise(2)🇺🇸 · Brian D. Wright(1) ((1) University of North Carolina, Chapel Hill, NC, (2) California Institute of Technology, Pasadena, CA)🇺🇸
Abstract
By extending the standard gauge group to SU(3)_c \times SU(2)_L \times U(1)_Y \times U(1)_X with X charges carried only by the third family we accommodate the LEP measurement of R_b and predict a potentially measurable discrepancy in A_{FB}^{b} in e^+e^- scattering and that D^0\bar{D}^0 mixing may be near its experimental limit. The Z', which explicitly violates the GIM mechanism, can nevertheless be naturally consistent with FCNC constraints. Direct detection of the Z' is possible but challenging.
Comments: 12 pages, plus 1 Postscript figure, uses revtex, Discussion of FCNC extended