Unification Bounds on the Possible N=2 Supersymmetry Breaking Scale

Details Unification Bounds on the Possible N=2 Supersymmetry Breaking Scale Unification Bounds on the Possible N=2 Supersymmetry Breaking Scale

1997-01-14

arxiv.org/abs/hep-ph/9701292v1

Phys.Lett.B399:92-96,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LATEX, 2 eps figures

Scientific paper

10.1016/S0370-2693(97)00283-9

In this letter, the possible appearance of N=2 supersymmetry at a low energy scale is investigated in the context of unified theories. Introducing mirror particles for all the gauge and matter multiplets of the Minimal Supersymmetric extension of the Standard Model (MSSM), the measured values of sin^2 \theta_W and \alpha_3(M_Z) indicate that the N=2 threshold scale M_{S_2} cannot be lower than \sim 10^{14}GeV. If the U(1) normalization coefficient k is treated as a free parameter, M_{S_2} can be as low as 10^9 GeV. On the other hand, if mirror quarks and leptons are absent and a non-standard value for k is used, N=2 supersymmetry breaking could in principle occur at the electroweak scale.

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