Document Type

Article

Article Version

Publisher's PDF

Publication Date

1-1-2003

Abstract

The first measurements of the transferred polarization for the exclusive e⃗ p→e′K+Λ⃗ reaction have been performed at Jefferson Laboratory using the CLAS spectrometer. A 2.567 GeV beam was used to measure the hyperon polarization over Q2 from 0.3 to 1.5   (GeV/c)2, W from 1.6 to 2.15 GeV, and over the full K+ center-of-mass angular range. Comparison with predictions of hadrodynamic models indicates strong sensitivity to the underlying resonance contributions. A nonrelativistic quark-model interpretation of our data suggests that the ss¯ quark pair is produced with spins predominantly antialigned. Implications for the validity of the most widely used quark-pair creation operator are discussed.

Comments

Copyright American Physical Society Publisher final version available at http://prl.aps.org/pdf/PRL/v90/i13/e131804

Publication Title

Physical Review Letters

Published Citation

D. S. Carman et al. [CLAS Collaboration], "First Measurement of Transferred Polarization in the Exclusive e⃗ p→e′K+Λ⃗Reaction", Physical Review Letter 90.13 (2003) DOI: 10.1103/PhysRevLett.90.131804

DOI

10.1103/PhysRevLett.90.131804

Peer Reviewed

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