Development of automatic amplitude generation program for new physics discovery at the LHC

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In this study we developed physics analysis tools that contribute to the discovery of new physics at the LHC of CERN. By the use of graphics processing unit (GPU) we have achieved the improvement of the performance of the event generation program by two orders of magnitude. It makes possible more precise estimate of backgrounds from the standard model processes to new physics. Parton shower program currently under development is expected to improve the accuracy of the simulation further.