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Recoil polarization in 𝐾+⁢𝑌 electroproduction in the nucleon resonance region with CLAS12

Journal Article · · Physical Review C
DOI:https://doi.org/10.1103/nhvq-7fv7· OSTI ID:2589121
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  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. INFN; Università di Roma Tor Vergata
  3. Université Paris-Saclay
  4. Old Dominion University
  5. Temple University
  6. Thomas Jefferson National Accelerator Facility
  7. INFN
  8. University of York
  9. Duquesne University
  10. Università degli Studi di Brescia; INFN
  11. Fairfield University
  12. INFN; INFN
  13. IRFU
  14. II Physikalisches Institut der Universitaet Giessen
  15. The George Washington University
  16. University of Connecticut
  17. IRFU; Université Paris-Saclay
  18. Skobeltsyn Nuclear Physics Institute and Physics Department at Lomonosov Moscow State University
  19. Università di Ferrara; INFN
  20. Lamar University
  21. Yerevan Physics Institute
  22. Thomas Jefferson National Accelerator Facility; INFN
  23. II Physikalisches Institut der Universitaet Giessen; University of Connecticut
  24. Ohio University
  25. Arizona State University
  26. Universidad Técnica Federico Santa María
  27. Mississippi State University
  28. University of Glasgow
  29. University of South Carolina
  30. Florida International University
  31. Argonne National Laboratory
  32. Thomas Jefferson National Accelerator Facility; Old Dominion University
  33. Massachusetts Institute of Technology
  34. Christopher Newport University; Thomas Jefferson National Accelerator Facility
  35. University of New Hampshire
  36. Kyungpook National University
  37. Universidad de La Serena; Universidad Técnica Federico Santa María
  38. University of South Carolina; Thomas Jefferson National Accelerator Facility
  39. James Madison University
  40. New Mexico State University; Temple University
  41. Thomas Jefferson National Accelerator Facility; University of New Hampshire
  42. University of California Riverside
  43. Christopher Newport University; The George Washington University
  44. California State University
  45. GSI Helmholtzzentrum fur Schwerionenforschung GmbH
  46. Christopher Newport University; Norfolk State University
  47. The George Washington University; Massachusetts Institute of Technology
  48. Canisius College
  49. Duke University
+ Show Author Affiliations
Hyperon recoil polarization measurements for the exclusive electroproduction of $$K^+\Lambda$$ and $$K^+\Sigma^0$$ final states from an unpolarized proton target have been carried out using the CLAS12 spectrometer at Jefferson Laboratory. The measurements at beam energies of 6.535~GeV and 7.546~GeV span the range of four-momentum transfer $Q^2$ from 0.3 to 4.5~GeV$^2$ and invariant mass $$W$$ from 1.6 to 2.4~GeV, while covering the full center-of-mass angular range of the $K^+$. These new $$\Lambda$$ polarization observables extend the existing data in a similar kinematic range but from a significantly larger dataset. However, they represent the first electroproduction measurements of this observable for the $$\Sigma^0$$. Finally, these data will allow for better exploration of the reaction mechanism in strangeness production, for further understanding of the spectrum and structure of excited nucleon states that couple to $KY$, and for improved insight into the strong interaction in the non-perturbative domain.
Research Organization:
Florida International Univ. (FIU), Miami, FL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
CLAS Collaboration
Grant/Contract Number:
AC05-06OR23177; SC0013620
OSTI ID:
2589121
Alternate ID(s):
OSTI ID: 3015434
Report Number(s):
JLAB-PHY--25-4325; arXiv:2505.12030
Journal Information:
Physical Review C, Journal Name: Physical Review C Journal Issue: 3 Vol. 112; ISSN 2469-9985; ISSN 2469-9993
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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