Z-prime Gauge Bosons at the Tevatron

Details Z-prime Gauge Bosons at the Tevatron Z-prime Gauge Bosons at the Tevatron

2004-08-06

arxiv.org/abs/hep-ph/0408098v1

Phys.Rev.D70:093009,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages, 13 figures

Scientific paper

10.1103/PhysRevD.70.093009

We study the discovery potential of the Tevatron for a Z-prime gauge boson. We introduce a parametrization of the Z-prime signal which provides a convenient bridge between collider searches and specific Z-prime models. The cross section for p pbar -> Z-prime X -> l^+ l^- X depends primarily on the Z-prime mass and the Z-prime decay branching fraction into leptons times the average square coupling to up and down quarks. If the quark and lepton masses are generated as in the standard model, then the Z-prime bosons accessible at the Tevatron must couple to fermions proportionally to a linear combination of baryon and lepton numbers in order to avoid the limits on Z--Z-prime mixing. More generally, we present several families of U(1) extensions of the standard model that include as special cases many of the Z-prime models discussed in the literature. Typically, the CDF and D0 experiments are expected to probe Z-prime-fermion couplings down to 0.1 for Z-prime masses in the 500--800 GeV range, which in various models would substantially improve the limits set by the LEP experiments.

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