Update on the Measurement of alpha_S with a 500 GeV Linear Collider
Bruce A. Schumm, Andrew S. Truitt
TL;DR
This paper discusses the potential for precisely measuring the strong coupling constant alpha_S at a 500 GeV Linear Collider using three-jet rates, focusing on energy distribution effects.
Contribution
It provides an updated analysis of measurement prospects and addresses the impact of center-of-mass energy distribution on alpha_S determination at high energies.
Findings
Energy distribution affects alpha_S measurement accuracy
Three-jet rate analysis is viable at 500 GeV
Updated prospects for high-energy alpha_S measurement
Abstract
An update on the prospects for the precise measurement of the strong coupling constant alpha_S at a high energy Linear Collider via the three-jet rate is presented. In particular, the issue of the distribution of center-of-mass energies of the identified q-qbar event sample, which can affect the determination of \alpha_S at the scale Q^2=(500 GeV)^2$, is addressed.
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