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Title: Differential cross section of γnK+Σ- on bound neutrons with incident photons from 1.1 to 3.6 GeV

Differential cross sections of the reaction γd → K+Σ(p) have been measured with the CLAS detector at Jefferson Lab using incident photons with energies between 1.1 and 3.6 GeV. This is the first complete set of strangeness photoproduction data on the neutron covering a broad angular range. At energies close to threshold and up to Eγ ~ 1.8 GeV, the shape of the angular distribution is suggestive of the presence of s -channel production mechanisms. For Eγ > 1.8 GeV, a clear forward peak appears and becomes more prominent as the photon energy increases, suggesting contributions from t-channel production mechanisms. Furthermore, these data can be used to constrain future analysis of this reaction.
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Publication Date:
OSTI Identifier:
986376
Report Number(s):
JLAB-PHY--09-1101; DOE/OR/23177--1130; arXiv:0912.4833
Journal ID: ISSN 0370-2693; PII: S0370269310004788; TRN: US1006340
Grant/Contract Number:
AC05-06OR23177
Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 688; Journal Issue: 4-5; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; DIFFERENTIAL CROSS SECTIONS; ENERGY RANGE; NEUTRONS; PHOTONS; PHOTOPRODUCTION; POLARIZATION; PRODUCTION photoproduction; hyperon; strangeness; missing resonances; nucleon resonance