Systematic of TauSpinner for τ pairs with two hard jets and its recent development

In this paper, we review results obtained by using the TauSpinner package. A sample of pp ! τ τ + jj events, where spin effects are not included, is supplemented with weight, then helicities of the τ leptons are attributed. The systematic uncertainties of TauSpinner due to variation of its input parameters as well as its recent development on implementation of non- Standard Model matrix elements are presented.