JS >> A photon has spin 1 and is its own antiparticle. Why can't this be for spin .5 particles?
Keeping in mind this is a Speculation Zone, I must repeat that I do not adhere to photons as particles at all. The energy and momenta of light quanta are transmitted completely via pinholes (photo-induced wormholes) aligned with (and described by) a light-like interval between interacting particles. If photons were really "particles", they would be knocking the bejesus out of neutrinos (and vice versa) in their very high, near-solar concentrations.
JS >> [Spin] would be orbital angular momentum, right? So, your neutrino has a spatial distribution of mass or something?
Yes, or something! A neutrino has a spatial extent of its gravitational field, but the morphology may be different than for luminous (electrically charged) particles.
I have stated elsewhere that gravitation is the action of an electric field *upon* its manifold while electric interaction occurs *across* the manifold (via pinholes). That is to say, both phenomina are aspects the SAME field. But here, I assert that dark matter particles exhibit gravitation though electrically neutral!
Photons aside, I don't recognize ANY of the particles of the Standard Model. Trying to describe the multidimensional universe in terms of zero dimensional "point particles" is hopeless. I seek a higher vantage point. I don't reject the Standard Model, I view it from above, not in altitude but in dimension. Specifically, I abandon point particles and work instead with one dimensional rays as the primary elements.
When a ray spins about the unidirectional temporal axis it sweeps out a field with one of two absolute directions. Thus, exactly two kinds of electric charge, positive (say clockwise) and negative (counterclockwise) with respect to the future. Two spin directions provides for two types of interaction, like and unlike across the manifold. Gravitation, as an action upon the manifold, is independent of spin direction (always contracts the interval field), so positrons and electrons both exhibit the same field.
For dark matter, a ray spins about a bidirectional spatial axis. Because of this, the ray is spinning both clockwise and counterclockwise at once (perspectives). The electric field is thus, self-negating. Gravitation being independent of spin direction, persists. But the field may be more disk-like. For large aggregations of neutral elements as in a black hole the gravity fields would still occur in all directions.
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