Limits on a Light Leptophobic Gauge Boson

Abstract

We consider the phenomenology of a naturally leptophobic $Z$-prime boson in the 1 to 10 GeV mass range. The $Z$-prime's couplings to leptons arise only via a radiatively-generated kinetic mixing with the $Z$ and photon, and hence are suppressed. We map out the allowed regions of the mass-coupling plane and show that such a $Z$-prime that couples to quarks with electromagnetic strength is not excluded by the current data. We then discuss possible signatures at bottom and charm factories.

11 pages LaTeX, one EPS figure

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• New Dimensions at a Millimeter to a Fermi and Superstrings at a TeV
• Extra Spacetime Dimensions and Unification

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