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Title: Photoproduction of the Σ+ hyperon using linearly polarized photons with CLAS

Journal Article · · Physical Review. C
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  1. Univ. of Glasgow, Scotland (United Kingdom); Durham Univ. (United Kingdom); The CLAS Collaboration. et al.
  2. University of Glasgow
  3. Institute for Advanced Simulation (IAS-4)
  4. University of York
  5. Thomas Jefferson National Accelerator Facility
  6. Université Paris-Saclay
  7. Old Dominion University
  8. Argonne National Laboratory
  9. Temple University
  10. Florida International University
  11. INFN
  12. Duquesne University
  13. INFN; Università degli Studi di Brescia
  14. Fairfield University
  15. II Physikalisches Institut der Universitaet Giessen
  16. The George Washington University
  17. Universidad Técnica Federico Santa María
  18. University of Connecticut
  19. Universita' di Ferrara; INFN
  20. Lamar University
  21. INFN; Università di Roma Tor Vergata
  22. Yerevan Physics Institute
  23. II Physikalisches Institut der Universitaet Giessen; University of Connecticut
  24. Ohio University
  25. Arizona State University
  26. Mississippi State University
  27. Florida State University
  28. University of New Hampshire; Thomas Jefferson National Accelerator Facility
  29. University of Richmond
  30. Skobeltsyn Institute of Nuclear Physics
  31. University of South Carolina
  32. Christopher Newport University; Thomas Jefferson National Accelerator Facility
  33. University of New Hampshire
  34. Virginia Tech
  35. Kyungpook National University
  36. University of Virginia
  37. Norfolk State University
  38. Catholic University of America; Florida International University
  39. INFN; Universita' di Ferrara
  40. Massachusetts Institute of Technology
  41. James Madison University; Ohio University
  42. New Mexico State University
  43. Arizona State University; Thomas Jefferson National Accelerator Facility
  44. University of California Riverside
  45. Christopher Newport University
  46. Old Dominion University; University of Virginia
  47. GSI Helmholtzzentrum für Schwerionenforschung GmbH
  48. Carnegie Mellon University
  49. Rensselaer Polytechnic Institute; Thomas Jefferson National Accelerator Facility
  50. Duke University
+ Show Author Affiliations

Measurements of the polarization observables Σ, P, T, Ox, Oz for the reaction $$\vec{γ}$$ p → $$K^0_S$$Σ+ using a linearly polarized photon beam of energy 1.1 to 2.1 GeV are reported. The measured data provide information on a channel that has not been studied extensively, but is required for a full coupled-channel analysis in the nucleon resonance region. Observables have been simultaneously extracted using likelihood sampling with a Markov-Chain Monte Carlo process. Angular distributions in bins of photon energy Eγ are produced for each polarization observable. T, Ox, and Oz are first time measurements of these observables in this reaction. The extraction of Σ extends the energy range beyond a previous measurement. The measurement of P, the recoil polarization, is consistent with previous measurements. The measured data are shown to be significant enough to affect the estimation of the nucleon resonance parameters when fitted within a coupled-channels model.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
National Science Foundation (NSF); Science and Technology Facilities Council (STFC); USDOE
Contributing Organization:
The CLAS Collaboration
Grant/Contract Number:
AC05-06OR23177
OSTI ID:
2522013
Report Number(s):
DOE/OR/23177-7792; JLAB-PHY--25-4219
Journal Information:
Physical Review. C, Journal Name: Physical Review. C Journal Issue: 2 Vol. 111; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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