Search for Extra dimensions in a single-jet and missing energy channel at CMS experiment

A possible solution to the hierarchy problem is the presence of extra spatial dimensions beyond the three ones which are known from our everyday experience. The phenomenological ADD model of large extra-dimensions predicts a missing transverse energy plus a single-jet signature. This contribution addresses the sensitivity of the CMS detector at the LHC pp collider to parameters of this model, focusing on the conditions expected for second half of 2010 running (sqrt(s) = 10 TeV, O(100) pb-1). It is shown that a significant improvement of the existing limits can be obtained in such an early stage.