Unification bounds on the possible N = 2 supersymmetrybreaking scale
Abstract
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 nonstandard value for k is used, N=2 supersymmetry breaking could in principle occur at the electroweak scale.
 Publication:

Physics Letters B
 Pub Date:
 April 1997
 DOI:
 10.1016/S03702693(97)002839
 arXiv:
 arXiv:hepph/9701292
 Bibcode:
 1997PhLB..399...92A
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 10 pages, LATEX, 2 eps figures