6533b86efe1ef96bd12cc6ff
RESEARCH PRODUCT
Updated determination of αs(mτ2) from τ decays
Antonio PichA. Rodríguez-sánchezsubject
Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsAlephParticle physics010308 nuclear & particles physics0103 physical sciencesStrong couplingGeneral Physics and AstronomyAstronomy and AstrophysicsOperator product expansion010306 general physics01 natural sciencesdescription
Using the most recent release of the ALEPH [Formula: see text] decay data, we present a very detailed phenomenological update of the [Formula: see text] determination. We have exploited the sensitivity to the strong coupling in many different ways, exploring several complementary methodologies. All determinations turn out to be in excellent agreement, allowing us to extract a very reliable value of the strong coupling. We find [Formula: see text] which implies [Formula: see text]. We critically revise previous work, and point out the problems flawing some recent analyses which claim slightly smaller values.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-09-15 | Modern Physics Letters A |