Thread: Unparticles

Can anyone explain what an unparticle is? From what I understand it is an entity that is scale invariant .... but I still dont get it. Please someone splain.

Do you have a link?

Unparticle physics - Wikipedia, the free encyclopedia
[hep-ph/0703260] Unparticle Physics

Originally Posted by grapes

Do you have a link?

From: [hep-ph/0703260] Unparticle Physics

I discuss some simple aspects of the low-energy physics of a nontrivial scale invariant sector of an effective field theory -- physics that cannot be described in terms of particles. I argue that it is important to take seriously the possibility that the unparticle stuff described by such a theory might actually exist in our world. I suggest a scenario in which some details of the production of unparticle stuff can be calculated. I find that in the appropriate low energy limit, unparticle stuff with scale dimension $d_{\mathcal{U}}$ looks like a non-integral number $d_{\mathcal{U}}$ of invisible particles. Thus dramatic evidence for a nontrivial scale invariant sector could show up experimentally in missing energy distributions.