Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dmap.conf..365b&link_type=abstract
DARK MATTER IN ASTROPHYSICS AND PARTICLE PHYSICS . Proceedings of the 7th International Heidelberg Conference on Dark 2009 . Hel
Astronomy and Astrophysics
Astrophysics
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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