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The Exact MSSM spectrum from string theory

Braun, V., He, Y., Ovrut, B. A. and Pantev, T. (2006). The Exact MSSM spectrum from string theory. Journal of High Energy Physics, 0605, doi: 10.1088/1126-6708/2006/05/043

Abstract

We show the existence of realistic vacua in string theory whose observable sector has exactly the matter content of the MSSM. This is achieved by compactifying the E_8 x E_8 heterotic superstring on a smooth Calabi-Yau threefold with an SU(4) gauge instanton and a Z_3 x Z_3 Wilson line. Specifically, the observable sector is N=1 supersymmetric with gauge group SU(3)_C x SU(2)_L x U(1)_Y x U(1)_{B-L}, three families of quarks and leptons, each family with a right-handed neutrino, and one Higgs-Higgs conjugate pair. Importantly, there are no extra vector-like pairs and no exotic matter in the zero mode spectrum. There are, in addition, 6 geometric moduli and 13 gauge instanton moduli in the observable sector. The holomorphic SU(4) vector bundle of the observable sector is slope-stable.

Publication Type: Article
Additional Information: The original publication is available at http://iopscience.iop.org/1126-6708/2006/05/043/ archiveprefix: arXiv primaryclass: hep-th
Publisher Keywords: superstrings and heterotic strings, superstring vacua
Subjects: Q Science > QC Physics
Departments: School of Mathematics, Computer Science & Engineering > Mathematics
URI: http://openaccess.city.ac.uk/id/eprint/863
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