What's the highest spin known?

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What's the highest spin known??

So what's the highest number of spin for a particle, both theoretical and actually found??. And what particle has it??. I read in the Cohen Tannoujdi (it's pretty old, that's why I'm asking) that there's up to 11/2. To which particle this correspond??. Thanks
 
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I think for the elementary particles in the Standard Model, the highest spin is...1 for the photon, gluons, and W and Z bosons. The theorized graviton has spin 2. All known elementary fermions are spin 1/2.

Composite systems; however, can have higher spin just by angular momentum addition.
 


You can excite nuclei up to about 80 units of angular momentum, although above perhaps 70 they tend to start to fission.
 


Spin is the angular momentum of an object in it's rest frame. So a spinning tennis ball will easily outperform all examples from nuclear or elementary physics.
 


In the absence of supersymmetry, the highest possible spin for an elementary particle can be 2, the theorized graviton. The theorem of Weinberg & Witten clarifies this.

EDIT: Only massless particles/fields.
 
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Doesn't Weinberg-Witten apply only to massless particles?
 


A bit trivially, a macroscopic magnet would have spins of the order of 10^23 or so. Just addition of many electronic spins.
Otherwise I think the 11/2 spin is for the dysprosium 3+ ion.
 


dextercioby said:
Indeed, it's for massless particles.

Then it is a theorem on helicity, not spin.
 
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