Search for Scalar and Tensor Unparticles in the Diphoton Final State

We present a search for scalar and tensor unparticles in the diphoton final state produced in $pp$ collisions at $10$~TeV center-of-mass energy, with the CMS detector. The analysis focuses on the data sample corresponding to the integrated luminosity of $\sim 100$ pb$^{-1}$, expected to be collected in the first LHC run. The study is based on the results obtained in the search for large extra dimensions~\protect\cite{LED}, where the virtual KK gravitons decay into two photons. The discovery potential and exclusion reach in terms of the unparticle model parameters are presented. This is the first experimental study of the sensitivity to unparticles decaying into the diphoton final state at a hadron collider.