Constraints on unparticle physics in electroweak gauge boson scattering

The existence of scale invariant physics would lead to new phenomena in particle physics that could be detected at the LHC. In this Letter we exploit the effects of these unparticles in WW -> WW scattering. From the requirement of unitarity we derive constraints on unparticle physics. We show that the existence of unparticles would lead to deviations in differential cross sections which can be measured. These deviations are sensitive on the scale dimension and on the spin characteristics of the unparticles. (c) 2007 Elsevier B.V. All rights reserved.