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arXiv · hep-ph/0107056

Proton Stability in Six Dimensions

Thomas Appelquist·Bogdan A. Dobrescu·Eduardo Ponton·Ho-Ung Yee
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Abstract

We show that Lorentz and gauge invariance explain the long proton lifetime within the standard model in six dimensions. The baryon-number violating operators have mass dimension 15 or higher. Upon TeV-scale compactification of the two universal extra dimensions on a square $T^2/Z_2$ orbifold, a discrete subgroup of the 6-dimensional Lorentz group continues to forbid dangerous operators.

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Thomas Appelquist, Bogdan A. Dobrescu, Eduardo Ponton, Ho-Ung Yee. 2001-10-09. Proton Stability in Six Dimensions. https://doi.org/10.1103/physrevlett.87.181802

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