Aspects of Z '-mediated supersymmetry breaking

作者：Langacker Paul^*; Paz Gil; Wang Lian Tao; Yavin Itay

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2008, 77(8): 085033.

DOI：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 similar to 10-100 TeV; an intermediate M(Z') similar to 3-30 TeV; light gauginos similar to 100-1000 GeV, of which the lightest can be W-ino-like; a light Higgs with a mass of similar to 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 (Large Hadron Collider) 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.

• 出版日期2008-4