Discriminating large extra dimensions at the ILC with polarized beams
  Non-standard scenarios described by effective interactions can manifest themselves indirectly, via corrections to the Standard Model cross sections. It should be desirable to identify at a given confidence level the source of such deviations among the different possible explanations. We here discuss the identification reach on gravity in extra dimensions from the four-fermion compositeness-inspired contact interactions and viceversa, using as basic observable the differential cross section of $e^+e^-\to\bar{f}f$ at the ILC, and emphasize the role of beams polarization in enhancing the identification sensitivity. 
A. A. Pankov (1), N. Paver (2), A. V. Tsytrinov (1) ((1) ICTP   Affiliated Centre, Pavel Sukhoi Technical University, Gomel,...