Opportunities and Requirements for Experimentation at a Very High Energy e<sup>+</sup>e<sup>-</sup> Collider

Abstract

Over the past fifteen years of high-energy physics, electron-positron annihilation has been the most productive of all reactions probing the fundamental interactions. The e+e- annihilation process is unique in offering at the same time copious production of novel particles, low backgrounds from more conventional physics, and the most efficient use of the energy which an accelerator provides. These features have allowed the detailed characterization of the charm and bottom quark-antiquark systems and the unambiguous discovery of gluon jets--the crucial ingredients in the establishment of Quantum Chromodynamics as the correct theory of the strong interactions--as well as the discovery of the tau lepton and the confirmation of the weak and electromagnetic properties of all of the quarks and leptons at high energy. Over the next few years, experiments will begin at SLC and LEP, and we anticipate new discoveries from the detailed study of the Z0 resonance. It is time, then, to begin to think out how one might continue this mode of experimentation to still higher energies. This document is the report of a committee convened by the Director of SLAC, Burton Richter, to set out the major physics goals of an e+e- collider in the energy range 600 GeV--1 TeV, corresponding to the next feasible step in accelerator technology. The committee was charged with the task of outlining the main experiments that such a collider might carry out and the requirements which those experiments place on the accelerator design.

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