Supersymmetric Contributions to the Decay of an Extra Z Boson

Details Supersymmetric Contributions to the Decay of an Extra Z Boson Supersymmetric Contributions to the Decay of an Extra Z Boson

1997-01-22

arxiv.org/abs/hep-ph/9701343v2

Phys.Rev. D57 (1998) 3178-3181

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, ReVTeX, 4 figures

Scientific paper

10.1103/PhysRevD.57.3178

We analyse in detail the supersymmetric contributions to the decay of an extra Z boson in effective rank 5 models, including the important effect of D-terms on sfermion masses. The inclusion of supersymmetric decay channels will reduce the Z' branching ratio to standard model particles resulting in lower Z' mass limits than those often quoted. In particular, the supersymmetric parameter space motivated by the recent Fermilab $ee\gamma\gamma$ event and other suggestive evidence results in a branching fraction B(Z' -> e^+ e^-)\simeq 2-4%. The expected cross sections and branching ratios could give a few events in the present data and we speculate on the connection to the three e^+e^- events observed at Fermilab with large dielectron invariant mass.

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