Lambda and Antilambda polarization from deep inelastic muon scattering

Abstract

We report results of the first measurements of Lambda and Antilambda polarization produced in deep inelastic polarized muon scattering on the nucleon. The results are consistent with an expected trend towards positive polarization with increasing x_F. The polarizations of Lambda and Antilambda appear to have opposite signs. A large negative polarization for Lambda at low positive x_F is observed and is not explained by existing models.A possible interpretation is presented.

9 pages, 2 figures

Cited by in corpus (38)

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• Measurement of Longitudinal Spin Transfer to Lambda Hyperons in Deep-Inelastic Lepton Scattering
• Measurement of the Antilambda Polarization in nu_mu Charged Current Interactions in the NOMAD Experiment
• Conceptual design of the Spin Physics Detector
• Longitudinal Spin Transfer to the $\Lambda$ Hyperon in Semi-Inclusive Deep-Inelastic Scattering
• Longitudinal Spin Transfer to $\Lambda$ and $\bar{\Lambda }$ Hyperons in Polarized Proton-Proton Collisions at $\sqrt{s}$ = 200 GeV
• Helicity and Transversity Distribution of Nucleon and $\Lambda$-Hyperon from $\Lambda$ Fragmentation
• Core meets corona: a two-component source to explain Lambda and anti-Lambda global polarization in semi-central heavy-ion collisions
• Quark Distributions of Octet Baryons from SU(3) Symmetry
• Anti-Lambda polarization in high energy pp collisions with polarized beam
• Hyperon polarization in semi-inclusive deeply inelastic lepton-nucleon scattering at high energy
• Transverse spin transfer to $\Lambda$ and $\bar{\Lambda }$ hyperons in polarized proton-proton collisions at $\sqrt{s}=200\mathrm{GeV}$
• Improved measurement of the longitudinal spin transfer to $\Lambda$ and $\bar{\Lambda }$ hyperons in polarized proton-proton collisions at $\sqrt{s}$ = 200 GeV
• Next-to-leading order QCD evolution of transversity fragmentation functions
• Spin Transfers for Baryon Production in Polarized pp Collisions at RHIC-BNL
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Probing the longitudinal spin transfer via dihadron polarization correlations in unpolarized $e^{+}{e}^{-}$ and $pp$ collisions
• Longitudinal polarization of hyperon and anti-hyperon in semi-inclusive deep-inelastic scattering
• Up and Down Quark Contributions to Spin Content of Lambda from Fragmentation
• Anti-Hyperon polarization in high energy pp collisions with polarized beams
• Study of Σ(1385) and Ξ(1321) hyperon and antihyperon production in deep inelastic muon scattering
• Spin transfer and polarization of antihyperons in lepton induced reactions
• $q\to \Lambda$ Fragmentation Function and Nucleon Transversity Distribution in a Diquark Model
• Longitudinal and transverse spin transfer to $\Lambda$ and $\overline{\Lambda }$ hyperons in polarized $p$+$p$ collisions at $\sqrt{s}=200$ GeV
• Quark Fragmentation Functions in a Diquark Model for $\Lambda$ Production
• Measuring polarization of light quarks at ATLAS and CMS
• Strange quark-antiquark asymmetry of nucleon sea from $\Lambda /\bar{\Lambda }$ polarization
• Dihadron helicity correlation in photon-nucleus collisions
• Spin Content of Lambda in QCD Sum Rules
• Suppression of Spin Transfer to $\Lambda$ Hyperon in Deep-Inelastic Scattering
• Ratio of $\bar{\Lambda }/\Lambda$ in Semi-inclusive Electroproduction
• Evidence for SU(3) symmetry breaking from hyperon production
• Hyperon polarization in e^-p --> e^-HK with polarized electron beams
• Particle-Antiparticle Asymmetries of $\Lambda$ Production in Hadron-Nucleon Collisions
• Mass Suppression in Octet Baryon Production
• Longitudinal spin transfer of Lambda and anti-Lambda in polarized pp collisions at \sqrt s=200 GeV at STAR
• Status of Spin Physics - Experimental Summary