Aspects of Z'-mediated Supersymmetry Breaking

Details Aspects of Z'-mediated Supersymmetry Breaking Aspects of Z'-mediated Supersymmetry Breaking

2008-01-24

arxiv.org/abs/0801.3693v2

Phys.Rev.D77:085033,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version published in PRD

Scientific paper

10.1103/PhysRevD.77.085033

In a recent paper, we proposed the possibility that supersymmetry breaking is communicated dominantly via a U(1)' vector multiplet. We also required that the U(1)' plays a crucial role in solving the mu problem. We discuss here in detail both the construction and the phenomenology of one class of such models. The low energy spectrum generically contains heavy sfermions, Higgsinos and exotics ~10-100 TeV; an intermediate M_Z' ~ 3-30 TeV; light gauginos ~100-1000 GeV, of which the lightest can be wino-like; a light Higgs with a mass of ~140 GeV; and a singlino which can be very light. We present a set of possible consistent charge choices. Several benchmark models are used to demonstrate characteristic phenomenological features. Special attention is devoted to interesting LHC signatures such as gluino decay and the decay patterns of the electroweak-inos. Implications for neutrino masses, exotic decays, R-parity, gauge unification, and the gravitino mass are briefly discussed.

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