Beam-polarization phenomena in high-energy e+e- collider physics.

Abstract

We consider the possible effects of a nontrivial initial-beam polarization in high-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider physics. Specifically, we address initial-beam-polarized production of possible new scalars and fermions. For definiteness, we take scalar leptons and scalar quarks as our typical new scalars and we take supersymmetric gauge-Higgs fermions as our typical fermions. In this way, we arrive at formulas which can be applied to any scalar and any fermion pair produced in lowest order in ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}A$, ${Z}^{0}\ensuremath{\rightarrow}X$. We have in mind that our formulas will be used first at the SLAC Linear Collider (SLC) and the CERN collider LEP. Thus, we illustrate them in the SLC-LEP-type energy regime. Applications to the TeV Linear Collider and CERN Linear Collider are immediate and will be taken up elsewhere.