6533b827fe1ef96bd12865f1
RESEARCH PRODUCT
QCD formulation of the tau decay and determination of Lambda (MS)
Antonio PichStephan Narisonsubject
Nuclear physicsQuantum chromodynamicsPhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::PhenomenologyDuality (optimization)FísicaHigh Energy Physics::ExperimentLambdaLeptondescription
Abstract We present a simple formulation of the inclusive and exclusive semi-hadronic decays of the tau lepton using QCD-duality finite energy sum rules (FESRs). We find that the tau decay is a good laboratory for measuring the QCD scaleΛ. Within the present experimental accuracy, we obtain Λ M S ¯ ⋍ 100–200 MeV to four loops. This prediction can be sensibly improved once the experimental situation has been clarified.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1988-08-01 |