Document Type

Article

Article Version

Publisher's PDF

Publication Date

1-1-2010

Abstract

We present measurements of the differential cross section and Λ recoil polarization for the γp→K+Λ reaction made using the CLAS detector at Jefferson Lab. These measurements cover the center-of-mass energy range from 1.62 to 2.84 GeV and a wide range of center-of-mass K+ production angles. Independent analyses were performed using the K+pπ− and K+p (missing π−) final-state topologies; results from these analyses were found to exhibit good agreement. These differential-cross-section measurements show excellent agreement with previous CLAS and LEPS results and offer increased precision and a 300-MeV increase in energy coverage. The recoil polarization data agree well with previous results and offer a large increase in precision and a 500-MeV extension in energy range. The increased center-of-mass energy range that these data represent will allow for independent study of nonresonant K+Λ photoproduction mechanisms at all production angles.

Comments

Copyright American Physical Society Publisher final version available at http://prc.aps.org/pdf/PRC/v81/i2/e025201

Publication Title

Physical Review C

Published Citation

M. E. McCracken et al. [CLAS Collaboration], "Differential cross section and recoil polarization measurements for the γp→K+Λ reaction using CLAS at Jefferson Lab," Physical Review C 81.2 (2010) DOI: 10.1103/PhysRevC.81.025201

DOI

10.1103/PhysRevC.81.025201

Peer Reviewed

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