An Elusive Z' Coupled to Beauty
Frampton, Paul H. · Wise, Mark B. · Wright, Brian D.
Original · EN
By extending the standard gauge group to SU(3)c × SU(2)ₗ × U(1)Y × U(1)ₓ with X charges carried only by the third family we accommodate the LEP measurement of Rb and predict a potentially measurable discrepancy in AFBᵇ in e+e- scattering and that D⁰D⁰ 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.
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