English

Unparticle Physics

High Energy Physics - Phenomenology 2008-11-26 v3

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 dUd_{\mathcal{U}} looks like a non-integral number dUd_{\mathcal{U}} of invisible particles. Thus dramatic evidence for a nontrivial scale invariant sector could show up experimentally in missing energy distributions.

Keywords

Cite

@article{arxiv.hep-ph/0703260,
  title  = {Unparticle Physics},
  author = {Howard Georgi},
  journal= {arXiv preprint arXiv:hep-ph/0703260},
  year   = {2008}
}

Comments

9 pages, 1 figure - more references and minor wording changes in v3