Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Standard(-like) Model from an SO(12) Grand Unified Theory in six-dimensions with S(2) extra-space

Jul 18, 2009, 9:30 AM
Middle Lecture Hall A (Kraków, Poland)

Middle Lecture Hall A

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Unified Theories, Strings, Non-perturbative QFT VII. Unified Theories, Strings, Non-perturbative QFT


Mr Takaaki Nomura (Saitama University)


We analyze a gauge-Higgs unification model which is based on a gauge theory defined on a six-dimensional spacetime with an $S^2$ extra-space. We impose a symmetry condition for a gauge field and non-trivial boundary conditions of the $S^2$. We provide the scheme for constructing a four-dimensional theory from the six-dimensional gauge theory under these conditions. We then construct a concrete model based on an SO(12) gauge theory with fermions which lie in a 32 representation of SO(12), under the scheme. This model leads to a Standard-Model(-like) gauge theory which has gauge symmetry SU(3) $\times$ SU(2)$_L$ $\times$ U(1)$_Y$($\times$ U(1)$^2$) and one generation of SM fermions, in four-dimensions. The Higgs sector of the model is also analyzed, and it is shown that the electroweak symmetry breaking and the prediction of W-boson and Higgs-boson masses are obtained.

Primary author

Prof. Joe Sato (Saitama University)


Mr Takaaki Nomura (Saitama University)

Presentation materials