A new review paper which will be a chapter in an Encyclopedia of Particle Physics summarizes various theories that have been advanced to explain the fundamental fermion masses in the Standard Model, and while it isn't complete, its table of contents is a nice summary of some of the leading approaches.
2 Fermion masses and mixing angles
2.1 The Standard Model2.2 Neutrino masses
Majorana neutrino massesThe seesaw mechanismType-I seesaw
Type-III seesawType-II seesawDirac neutrino mass
2.3 The data
3 In search of an organizing principle4 Grand Unified Theories
4.1 SU(5) GUTs4.2 SU(10) GUTs
5 Fermion masses from quantum corrections
5.1 Radiative fermion masses5.2 Infrared fixed points
6 CompositeFermions
6.1 Massless composite fermions6.2 Partial compositeness
7 Flavor Symmetries
7.1 The Froggatt-Nielsen Model7.2 Variants and alternatives
8 Fermion masses in String Theory
8.1 Aiming at the SM from strings8.2 Eclectic flavor symmetries from heterotic orbifolds8.3 Flavor in models with D-branes8.4 Metaplectic flavor symmetries from magnetized branes
The LP & C relationship, and the kind of dynamical balancing rules that I favor don't get a mention, although they come closest to the quantum corrections approach.
1 comment:
what Theories To Explain The Fundamental Fermion Masses do you back up the most ?
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