On Tue, Mar 19, 2013 at 12:57 PM, Axil Axil <[email protected]> wrote: > http://physicsworld.com/cws/article/news/2007/jun/18/the-hunt-for-unparticles-is-on > > What are unparticles? Here is the explanation.
The first paper published on unparticles: http://arxiv.org/pdf/hep-ph/0703260v3.pdf <<Abstract 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 dU looks like a non-integral number dU of invisible particles. Thus dramatic evidence for a nontrivial scale invariant sector could show up experimentally in missing energy distributions.>> Harry
