Physics parameters

This report describes the work of the Parameters Group active during the Stanford Linear Collider Workshop. The purpose of the physicists in this group was to investigate experimental aspects of the electron-positron annihilation mediated by the weak neutral gauge boson. Since their goal was to establish the experimental requirements to be met by detectors, rather than solve the technical problems they raise, a conscious effort was made to avoid technological issues. The interests of the participants are reflected in the three chapters of this report: Z0 → HADRONS, Z0 → CHARGED LEPTONS, and OTHER PROCESSES. The sections on hadrons review general characteristics of the multi-hadron final states and investigate the parameters of detectors capable of studying the jets of produced particles, with special emphasis on the solid angle, segmentation, and energy and momentum resolution issues. The studies of the charged lepton channels deals with these topics too, but in addition consider the statistical accuracy of the data, the magnitude of the weak effects, and the accuracy of determination of weak parameters in the framework of the SU(2) x U(1) model. Finally, the studies of lower rate processes, such as Higgs particle production and radiative Z0 production, expand the discussion to include the magnitude of background processes and specific detector requirements