Analysis method for search for B0→l+l− at Belle experiment

The Belle experiment is performed at High Energy Accelerator Research Organization (KEK) at Tsukuba, Japan. A large number of B mesons are generated at the KEKB e+e− asymmetric-energy collider. We report on the status of search for decays B0→e+e− and B0→μ+μ− through analysis of the data collected by Belle detector.