What's the highest spin known?

[asierraalta7]

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

 

[Matterwave]

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.

 

[Vanadium 50]

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

 

[DrDu]

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.

 

[dextercioby]

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.

 

[Vanadium 50]

Doesn't Weinberg-Witten apply only to massless particles?

 

[dextercioby]

Indeed, it's for massless particles.

 

[Nemus]

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.

 

[DrDu]

Indeed, it's for massless particles.

Then it is a theorem on helicity, not spin.