Get the pLambda  correlation function of AuAu@3GeV of different centrality and rapidity with the systematic error, after correction of purity, smearing effect and Feed-Down effect

Use the UrQMD+CRAB to reproduce the result, and get the source size of pLambda (sensitive to the range of axis of the histogram, need more analysis)

Use CATS to fit CF and get the souse size, in more central collision the size is bigger, and the value is smaller than the size from UrQMD(because of the long tail of R_relative distribution)

Use the Feed-Down matrix to get the residual CF of feed-down effect, verified that the residual CF is almost flat