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Identification of a sample of e+e- -> qq Events For the Precise Measurement of Alpha_S in High Energy Electron Positron Colliders

Bruce A. Schumm
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Abstract

Based on the PYTHIA physics simulation package, and a fast simulation of the proposed detector for the Next Linear Collider, a set of cuts is identified which leads to a sample of e+e- -> qq events appropriate for the precise measurement of alpha_s in e+e- annihilation at sqrt(s) = 500 GeV/c^2. Using these cuts, the systematic uncertainty on alpha_s associated with correcting for selection cut biases and remaining non-e+e- -> qq (q ^= t) contamination is expected to be less than +/- 1%. This work was done as part of a study of the prospects for the precise measurement of alpha_s at future High Energy Physics facilities, undertaken for the 1996 Snowmass Workshop on New Directions in High Energy Physics.

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Bruce A. Schumm. 1996-12-13. Identification of a sample of e+e- -> qq Events For the Precise Measurement of Alpha_S in High Energy Electron Positron Colliders. https://arxiv.org/abs/hep-ex/9612013

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