It is a curious fact that our most well-studied BSM theories can inform us
about the Standard Model itself. Just over a decade ago, [1], Baez and Huerta
explained how the Standard Model's gauge group can be seen to coincide with the
intersection of Georgi and Glashow's SU(5), and Pati and Salam's SU(4)×SU(2)×SU(2), inside Spin(10). More recently, [2], [3], it was shown how
(up to a factor of B-L) the Spin(10) model, the Pati-Salam model, the
Left-Right Symmetric model, the Standard Model pre-Higgs mechanism, and the
Standard Model post-Higgs mechanism are interlinked via a sequence of division
algebraic reflections. Between these three papers, [1], [2], [3], are six
theories that have been studied extensively by particle physicists. In this
article, we demonstrate how the full set of six familiar particle models may be
laid out in one connected algebraic particle roadmap. The inclusion of a
quaternionic reflection within the network further differentiates W±
bosons from the Z0 boson in comparison to the Standard Model. It may
introduce subtle new considerations for the phenomenology of electroweak
symmetry breaking.Comment: 14 pages, 6 figures, First paper in a serie