Gauge Unification in Supersymmetric Intersecting Brane Worlds

Details Gauge Unification in Supersymmetric Intersecting Brane Worlds Gauge Unification in Supersymmetric Intersecting Brane Worlds

2003-05-19

arxiv.org/abs/hep-th/0305146v2

JHEP 0307:036,2003

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, harvmac & 3 figures; v2: one ref. added

Scientific paper

10.1088/1126-6708/2003/07/036

We show that contrary to first expectations realistic three generation supersymmetric intersecting brane world models give rise to phenomenologically interesting predictions about gauge coupling unification. Assuming the most economical way of realizing the matter content of the MSSM via intersecting branes we obtain a model independent relation among the three gauge coupling constants at the string scale. In order to correctly reproduce the experimentally known values of sin^2[theta_W(M_z)] and alpha_s(M_z) this relation leads to natural gauge coupling unification at a string scale close to the standard GUT scale 2 x 10^16 GeV. Additional vector-like matter can push the unification scale up to the Planck scale.

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