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arXiv · 0802.3702

Extra Gauge Invariance from an Extra Dimension

Christopher D. Carone·Joshua Erlich·Marc Sher
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Abstract

We describe higher-dimensional theories whose low-energy 4D descriptions contain larger gauge or global symmetry groups. As an example, we construct a Higgsless SU(2) x U(1) model of electroweak symmetry breaking. The 5D SU(2) gauge invariance contains both the weak SU(2) gauge group and a custodial symmetry that protects the rho parameter. Fermions obtain isospin-violating masses while maintaining universal gauge couplings among all three generations. As a further example, we construct a model of chiral color based on a single SU(3).

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Christopher D. Carone, Joshua Erlich, Marc Sher. 2008-02-26. Extra Gauge Invariance from an Extra Dimension. https://doi.org/10.1103/physrevd.78.015001

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