6533b86ffe1ef96bd12cde65
RESEARCH PRODUCT
The Ratio R of hadronic and electronic Z widths and the strong coupling constant alpha-s
M. I. MartínezGunter QuastGiampiero PassarinoThomas Hebbekersubject
Quantum chromodynamicsCoupling constantPhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::PhenomenologyHadronElectroweak interactionWidth ratiolcsh:QC1-999Nuclear physicsHiggs bosonStrong couplingHigh Energy Physics::ExperimentAstrophysics::Earth and Planetary Astrophysicslcsh:PhysicsParticle Physics - Phenomenologydescription
Abstract We review the relation between the ratio of hadronic and electronic Z widths, R = Γ( Z → q q )/Γ( Z → e + e − ) and the strong coupling constant at the Z mass, αs. The theoretical uncertainty of αs derived from R is estimated to be Δα s = ±0.002 (electroweak) ± 0.002 (QCD) −0.003 +0.004 (m top , m Higgs ) .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-06-01 |