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Title: Strong Evidence for Nucleon Resonances near 1900 MeV

Data on the reaction yp→K +A from the CLAS experiments are used to derive the leading multipoles, E 0+, M 1-, E 1+, and M 1+, from the production threshold to 2180 MeV in 24 slices of the invariant mass. The four multipoles are determined without any constraints. The multipoles are fitted using a multichannel L+P model that allows us to search for singularities and to extract the positions of poles on the complex energy plane in an almost model-independent method. The multipoles are also used as additional constraints in an energy-dependent analysis of a large body of pion and photoinduced reactions within the Bonn-Gatchina partial wave analysis. The study confirms the existence of poles due to nucleon resonances with spin parity J P=1/2 -, 1/2 +, and 3/2 + in the region at about 1.9 GeV.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [6] ;  [6] ;  [1] ;  [6] ;  [7] ;  [8]
  1. Univ. of Bonn (Germany). Helmholtz - institut fur Strahlen - und Kernphysik; Petersburg Nuclear Physics Inst., Gatchina (Russia). National Research Centre Kurchatov Inst.
  2. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Univ. of Tuzla (Bosnia). Faculty of Natural Science and Mathematics
  4. Univ. of Glasgow, Scotland (United Kingdom). School of Physics and Astronomy, Scottish Universities Physics Alliance (SUPA)
  5. Univ. of Bonn (Germany). Helmholtz - institut fur Strahlen - und Kernphysik; Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  6. Univ. of Tuzla (Bosnia). Faculty of Natural Science and Mathematics
  7. Rudjer Boskovic Inst., Zagreb (Croatia)
  8. Univ. of Bonn (Germany). Helmholtz - institut fur Strahlen - und Kernphysik
Publication Date:
Report Number(s):
JLAB-PHY-17-2552
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1702822
Grant/Contract Number:
SFB/TR110; SFB1044; ST/L005719/1; RSF 16-12-10267
Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 6; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE; Russian Science Foundation; German Research Foundation (DFG); National Science Foundation (NSF); UK Science and Technology Facilities Council
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1390049
Alternate Identifier(s):
OSTI ID: 1375259