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Title: Differential Photoproduction Cross Sections of the Sigma0(1385), Lambda(1405), and Lambda(1520)

We report the exclusive photoproduction cross sections for the Sigma(1385), Lambda(1405), and Lambda(1520) in the reactions gamma + p -> K+ + Y* using the CLAS detector for energies from near the respective production thresholds up to a center-of-mass energy W of 2.85 GeV. The differential cross sections are integrated to give the total exclusive cross sections for each hyperon. Comparisons are made to current theoretical models based on the effective Lagrangian approach and fitted to previous data. The accuracy of these models is seen to vary widely. The cross sections for the Lambda(1405) region are strikingly different for the Sigma+pi-, Sigma0 pi0, and Sigma- pi+ decay channels, indicating the effect of isospin interference, especially at W values close to the threshold.
 [1] ;  [2]
  1. Indiana U.
  2. Carnegie Mellon U.
Publication Date:
OSTI Identifier:
Report Number(s):
JLAB-PHY-13-1744; DOE/OR/23177-2593; arXiv:1305.6776
DOE Contract Number:
AC05- 84ER40150; FG02-87ER40315
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys. Rev. C; Journal Volume: 88; Journal Issue: 04; Related Information: Addendum-ibid. C88 (2013) 4, 049902:
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Energy Research (ER)
Country of Publication:
United States