Data-driven Estimation of SM Backgrounds for SUSY Searches at the LHC
  Searches for supersymmetry (SUSY) are very important tasks at the Large Hadron colleder(LHC). If SUSY exists at the TeV scale, clear excess above the Standard Model (SM) background will be observed. SM background should be estimated from real data self. In this paper, we descrive the strategy for the early SUSY searches at the LHC and focus on the data-driven estimation of the SM background in the early stage of collision. 
Takayuki Yamazaki (for the ATLAS and CMS Collaborations)