A Z2xZ2 standard model
High Energy Physics - Theory
2010-07-01 v1 High Energy Physics - Phenomenology
Abstract
We present a Z_2 x Z_2 orbifold compactification of the E_8 x E_8 heterotic string which gives rise to the exact chiral MSSM spectrum. The GUT breaking SU(5) to SU(3)_C x SU(2)_L x U(1)_Y is realized by modding out a freely acting symmetry. This ensures precision gauge coupling unification. Further, it allows us to break the GUT group without switching on flux in hypercharge direction, such that the standard model gauge bosons can remain massless when the orbifold singularities are blown up. The model has vacuum configurations with matter parity, a large top Yukawa coupling and other phenomenologically appealing features.
Keywords
Cite
@article{arxiv.0911.4905,
title = {A Z2xZ2 standard model},
author = {Michael Blaszczyk and Stefan Groot Nibbelink and Michael Ratz and Fabian Ruehle and Michele Trapletti and Patrick K. S. Vaudrevange},
journal= {arXiv preprint arXiv:0911.4905},
year = {2010}
}
Comments
16 pages