Document Type

Article

Publication Date

2001

DOI

10.1103/PhysRevC.64.044601

Publication Title

Physical Review C

Volume

64

Issue

4

Pages

1-10

Abstract

The reaction epe′K+Λ(1520) with Λ(1520)→p′K was studied at electron beam energies of 4.05, 4.25, and 4.46 GeV, using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The cos θK+, φK+, Q2, and W dependencies of Λ(1520) electroproduction are presented for the kinematic region 0.9 < Q2 < 2.4 GeV2 and 1.95 < W < 2.65 GeV. Also, the Q2 dependence of the Λ(1520) decay angular distribution is presented for the first time. The cosθK+ angular distributions suggest t-channel diagrams dominate the production process. Fits to the Λ(1520) t-channel helicity frame decay angular distributions indicate the mz = ± ½ parentage accounts for about 60% of the total yield, which suggests this reaction has a significant contribution from t-channel processes with either K+ exchange or longitudinal coupling to an exchanged K*. The Q2 dependence of the Λ(1520) production cross section is the same as that observed for Λ(1116) photo- and electroproduction.

Comments

© 2001 American Physical Society.

"Yes, the author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged. If a fee is charged, then APS permission must be sought. In all cases, the appropriate bibliographic citation and notice of the APS copyright must be included."

Publisher's version available at: https://doi.org/10.1103/PhysRevC.64.044601

Original Publication Citation

Dodge, G.E., Hyde-Wright, C.E., Kuhn, S.E., Weinstein, L.B., et al., The CLAS Collaboration (2001). Electroproduction of the Λ(1520) hyperon. Physical Review C, 64(4), 1-10, Article 044601. https://doi.org/10.1103/PhysRevC.64.044601

ORCID

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

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