all available experimental data, is proposed as a testing ground to explore the potential of such extended experimental and theoretical effort. Preliminary studies have shown that while the ultimate aim of the SPA project can be achieved, additional work both on the theoretical as well as on the experimental side is still needed. In particular, SPA should include detailed analyses of other benchmark points and SUSY scenarios.

The SPA Project is a dynamical system expected to evolve continuously. The current status of the Project, listing the conveners responsible for specific tasks as well as the links to the available calculational tools, can be found at the SPA home page: www://spa.desy.de/spa.

Need for higher-order calculations
----------------------------------

The present level of theoretical calculations still does not match the expected experimental precision, particularly in coherent LHC+ILC analyses. For example, table \[tab:scale\] shows a crude estimate of lower limits on the theoretical errors in deriving the superparticle masses in the SPS1a’ point by shifting the SUSY scale $\tilde{M}$ from 1 TeV down to 100 GeV. While the experimental precision at LHC can be matched in general, another order-of-magnitude improvement is required in the theoretical precision to match the expected experimental errors at ILC.

$
