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A universal seesaw mechanism in five dimensions

Naoyuki Haba
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Abstract

We show the universal seesaw in the extra dimension setup, where three extra vector-like fields exist in the 5D bulk with heavy masses. We take the framework of the left-right symmetric model. The universal seesaw formula is easily obtained as a replacement of the vector-like mass in 4D case M_i to 2 M_* tan[pi RM_i] (M_*: 5D Planck scale, M_i: vector-like bulk mass, and R: compactification radius). The smallness of Dirac neutrino mass can be naturally explained in the 5D setup. We also show the Majorana neutrino case.

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Naoyuki Haba. 2006-08-22. A universal seesaw mechanism in five dimensions. https://doi.org/10.1103/physrevd.74.113002

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