Duality violations in hadronic tau decays and the value of alpha_s
Diogo Boito, Oscar Cata, Maarten Golterman, Matthias Jamin, Kim, Maltman, James Osborne, Santiago Peris
TL;DR
This paper examines how duality violations affect the extraction of the strong coupling constant alpha_s from hadronic tau decay data, highlighting the importance of accounting for these effects in precise measurements.
Contribution
It provides a preliminary analysis of OPAL data to quantify the impact of duality violations on alpha_s determination from tau decays.
Findings
Duality violations significantly influence alpha_s extraction.
Preliminary analysis indicates the need for careful modeling of duality effects.
Results suggest potential adjustments to existing alpha_s estimates.
Abstract
We discuss the quantitative impact of duality violations on the determination of the strong coupling constant from hadronic tau decays, based on a preliminary analysis of OPAL data.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Nuclear physics research studies