Offering the Mechanism for Generating Families:. the Approach Unifying Spins and Charges Predicts a New Stable Family Forming Dark Matter Clusters

Astronomy and Astrophysics – Astrophysics

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Origin Of Families, New Stable Family, Dark Matter Candidate, Higher Dimensional Spaces, Unifying Theories, Dark Matter Candidates, Kaluza-Klein-Like Theories

Scientific paper

The approach1-4 unifying all the internal degrees of freedom--the family quantum number, the spin and all the charges into only two kinds of the spin-- is offering a new way of understanding the properties of quarks and leptons: not only their charges and their connection to the corresponding gauge fields but also the appearance of families and the Yukawa couplings. In this talk I present a simple starting Lagrange density for a spinor--carrying in d = 1+13 only two kinds of the spin, no charges, and interacting with the corresponding gauge fields--the vielbeins and the two kinds of spin connection fields. The way of breaking the starting symmetries determines the observed properties of the families of spinors and of the gauge fields, predicting that there are four families at low energies and that a much heavier fifth family with zero Yukawa couplings to the lower four families, might, by forming baryons in the evolution of the universe, contribute a major part to the dark matter. I report on the limitations that the cosmological and the direct experimental evidences might put on this stable family of quarks and leptons.

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