Abstract
We report the first measurements of the E beam-target helicity asymmetry for the γ→ n→ → K0Λ and K0Σ0 channels in the energy range 1.70 ≤ W ≤ 2.34 GeV. The CLAS system at Jefferson Lab uses a circularly polarized photon beam and a target consisting of longitudinally polarized solid molecular hydrogen deuteride with low background contamination for the measurements. The multivariate analysis method boosted decision trees is used to isolate the reactions of interest. Comparisons with predictions from the KaonMAID, SAID, and Bonn-Gatchina models are presented. These results will help separate the isospin I = 0 and I = 1 photocoupling transition amplitudes in pseudoscalar meson photoproduction.
Document Type
Article
Publication Date
10-19-2018
Digital Object Identifier (DOI)
https://doi.org/10.1103/PhysRevC.98.045205
Funding Information
The work of the Medium Energy Physics group at Carnegie Mellon University was supported by DOE Grant No. DE-FG02-87ER40315. The Southeastern Universities Research Association (SURA) operated the Thomas Jefferson National Accelerator Facility for the United States Department of Energy under Contract No. DE-AC05-84ER40150. Further support was provided by the National Science Foundation, the Chilean Comisión Nacional de Investigación Científica y Tecnológica (CONICYT), the French Centre National de la Recherche Scientifique, the French Commissariat à l'Energie Atomique, the Italian Istituto Nazionale di Fisica Nucleare, the National Research Foundation of Korea, the Scottish Universities Physics Alliance (SUPA), and the United Kingdom's Science and Technology Facilities Council.
Repository Citation
Ho, D. H.; Schumacher, R. A.; D’Angelo, A.; Deur, A.; Fleming, J.; Hanretty, C.; Kageya, T.; Klein, F. J.; Klempt, E.; Lowry, M. M.; Lu, H.; Nikonov, V. A.; Peng, P.; Sandorfi, A. M.; Sarantsev, A. V.; Strakovsky, I. I.; Walford, N. K.; Wei, X.; Workman, R. L.; Adhikari, K. P.; Adhikari, S.; Adikaram, D.; Akbar, Z.; Ball, J.; Barion, L.; Bashkanov, M.; Bass, C. D.; Battaglieri, M.; Bedlinskiy, I.; Biselli, A. S.; and Gohn, Wesley P., "Beam-Target Helicity Asymmetry E in K0Λ and K0Σ0 Photoproduction on the Neutron" (2018). Physics and Astronomy Faculty Publications. 614.
https://uknowledge.uky.edu/physastron_facpub/614
Notes/Citation Information
Published in Physical Review C, v. 98, issue 4, 045205, p. 1-11.
© 2018 American Physical Society
The copyright holder has granted the permission for posting the article here.
Due to the large number of authors, only the first 30 and the authors affiliated with the University of Kentucky are listed in the author section above. For the complete list of authors, please download this article or visit: https://doi.org/10.1103/PhysRevC.98.045205
This group of authors is collectively known as The CLAS Collaboration.