$\Lambda$ and $\bar{\Lambda}$ polarization from deep inelastic muon scattering

The E665 Collaboration:     M.R. Adams - et al.

doi:doi:10.1007/s100520000493

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2022 Impact factor 4.4

Particles and Fields

Eur. Phys. J. C 17, 263-267
DOI 10.1007/s100520000493

$\Lambda$ and $\bar{\Lambda}$ polarization from deep inelastic muon scattering

The E665 Collaboration

M.R. Adams⁶ - et al.

⁶ University of Illinois, Chicago, IL 60680, USA

Received: 5 June 2000 / Published online: 8 September 2000 - © Springer-Verlag 2000

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