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Title: Differential cross sections and polarization observables from CLAS K *photoproduction and the search for new N* states

The reaction $$\gamma p \to K^{*+} \Lambda$$ was measured using the CLAS detector for photon energies between the threshold and 3.9 GeV at the Thomas Jefferson National Accelerator Facility. For the first time, spin-density matrix elements have been extracted for this reaction. Differential cross sections, spin density matrix elements, and the $$\Lambda$$ recoil polarization are compared with theoretical predictions using the BnGa partial wave analysis. The main result is the evidence for significant contributions from $N(1895)1/2^-$ and $N(2100)1/2^+$ to the reaction. Branching ratios for decays into $$K^*\Lambda$$ for these resonances and further resonances are reported.
  1. National Research Centre (NRC), Moscow (Russian Federation). Kurchatov Inst. (NRCKI); Univ. of Bonn (Germany); et al.
Publication Date:
Report Number(s):
JLAB-PHY-17-2469; DOE/OR/23177-4139
Journal ID: ISSN 0370-2693; PII: S0370269317303921
Grant/Contract Number:
PHY-1306137; 16-12-10267; AC05-06OR23177; AC02-06CH11357; AC05- 06OR23177; SC0016583
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 771; Journal ID: ISSN 0370-2693
Research Org:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); George Washington Univ., Washington, DC (United States)
Sponsoring Org:
National Commission of Scientific and Technological Research (CONICYT); National Institute for Nuclear Physics (INFN); German Research Foundation (DFG); National Center for Scientific Research (CNRS); French Alternative Energies and Atomic Energy Commission (CEA); National Science Foundation (NSF); Science and Technology Facilities Council (STFC); Scottish Universities Physics Alliance (SUPA); National Research Foundation of Korea (NRF); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Orgs:
The CLAS Collaboration
Country of Publication:
United States
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Baryon spectroscopy; Meson photoproduction; Polarization observables; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; kaon photoproduction
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1360908; OSTI ID: 1423452; OSTI ID: 1439893