First Measurement of Transferred Polarization in the Exclusive ^→e p → e'K^{+ →}Λ

Authors

M. Bektasoglu, Old Dominion University
K. V. Dharmawardane, Old Dominion University
G. E. Dodge, Old Dominion UniversityFollow
T. A. Forest, Old Dominion University
C. E. Hyde-Wright, Old Dominion UniversityFollow
A. V. Klimenko, Old Dominion University
S. E. Kuhn, Old Dominion UniversityFollow
R. A. Niyazov, Old Dominion University
L. M. Qin, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow
J. Yun, Old Dominion University

Document Type

Article

Publication Date

2003

DOI

10.1103/PhysRevLett.90.131804

Publication Title

Physical Review Letters

Volume

90

Issue

13

Pages

1-6

Abstract

The first measurements of the transferred polarization for the exclusive ^→ep → e'K+ ^→Λ over right arrow 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 s ^-s quark pair is produced with spins predominantly antialigned. Implications for the validity of the most widely used quark-pair creation operator are discussed.

Comments

© 2003 The American Physical Society

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Publisher's version available at: https://doi.org/10.1103/PhysRevLett.90.131804

Original Publication Citation

Carman, D.S., Dodge, G.E., Hyde-Wright, C.E., Kuhn, S.E., Weinstein, L.B., Zhou, Z. (2003). First measurement of transferred polarization in the exclusive ^→e p → e'K^{+ →}Λ Physical Review Letters, 90(13), 1-6, Article 131804. https://doi.org/10.1103/PhysRevLett.90.131804

ORCID

0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde-Wright), 0000-0003-2243-6836 (Kuhn), 0000-0001-5416-2900 (Weinstein)

Repository Citation

Bektasoglu, M.; Dharmawardane, K. V.; Dodge, G. E.; Forest, T. A.; Hyde-Wright, C. E.; Klimenko, A. V.; Kuhn, S. E.; Niyazov, R. A.; Qin, L. M.; Weinstein, L. B.; and Yun, J., "First Measurement of Transferred Polarization in the Exclusive ^→e p → e'K^{+ →}Λ" (2003). Physics Faculty Publications. 504.
https://digitalcommons.odu.edu/physics_fac_pubs/504