Interactions of unparticles with standard model particles

We study interactions of unparticles U of dimension dU due to Georgi with standard model (SM) fields through effective operators. The unparticles describe the low energy physics of a nontrivial scale invariant sector. Since unparticles come from beyond the SM physics, it is plausible that they transform as a singlet under the SM gauge group. This helps tremendously in limiting possible interactions. We analyze interactions of scalar U, vector Uμ, and spinor Us unparticles with SM fields and derivatives up to dimension four. Using these operators, we discuss different features of producing unparticles at an e+e- collider and other phenomenologies. It is possible to distinguish different unparticles produced at an e+e- collider by looking at various distributions of production cross sections