**A Family of Gravitons?**

I would like to make a conjecture and call it "Spin Inversion Symmetry". It says: Every elementary particle in the Standard Model (except for the Higgs) of spin s has a partner of spin 1/s.

So the fermions (spin 1/2) in the Standard Model would have spin 2 partners and the bosons (spin 1) in the Standard Model would be their own partners.

Of course, for this to work we need to have at least one spin 2 particle. Maybe more. A family of Gravitons?

Content written and posted by Ken Abbott abbottsystems@gmail.com