6533b834fe1ef96bd129ddda
RESEARCH PRODUCT
Lambda(b) polarization in Z(0) decays at LEP
Delphi CollaborationReyes Alemany FernándezSusana Cabrera UrbánMaría Victoria Castillo GiménezEduardo Cortina GilMaría José Costa MezquitaAntonio Ferrer SoriaJuan A. Fuster VerdúCarmen García GarcíaInés Gil BotellaJuan José Hernández ReyEmilio Higón RodríguezFernando Martínez VidalArantza Oyanguren CamposJosé Salt CairolsPablo Tortosa Martínezsubject
High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentFísica nuclearAstrophysics::Earth and Planetary AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsNuclear ExperimentPartícules (Física nuclear)description
The longitudinal polarization of the Λb baryon is measured at the LEP e+e− collider by DELPHI. It is determined from the charged lepton and neutrino energy spectra in 249±19 Λb semileptonic decays reconstructed in ≈3.5 million hadronic Z0 decays using Λ0-lepton correlations. The measured polarization is: PΛb=−0.49−0.30+0.32(stat.)±0.17(syst.)
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 |