6533b834fe1ef96bd129e14f
RESEARCH PRODUCT
The strong coupling from ALEPH tau decays
Antonio Rodriguez-sanchezsubject
PhysicsQuantum chromodynamicsNuclear and High Energy PhysicsAlephParticle physicsSpectral representation010308 nuclear & particles physics01 natural sciencesStability (probability)0103 physical sciencesStrong couplingHigh Energy Physics::ExperimentSpectral function010306 general physicsdescription
The strong coupling from ALEPH tau decays. We use the publically available non-strange spectral function from ALEPH tau decays to critically analyze the different determinations of αs(mτ2) that can be found in the literature and the numerical impact of their possible weaknesses. We also introduce some novel approaches. We find that perturbative uncertainties dominate. Our results with different approaches are very stable. Our final value is αs(mτ2)=0.328±0.013.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-06-01 | Nuclear and Particle Physics Proceedings |