Polarisation of the omega meson in the pd -> He-3 omega reaction at 1360 and 1450 MeV

K. Schonning, Chr. Bargholtz, M. Bashkanov, M. Berlowski, D. Bogoslawsky, H. Calen, H. Clement, L. Demiroers, C. Ekstrom, K. Fransson, L. Geren, L. Gustafsson, B. Hoistad, G. Ivanov, M. Jacewicz, E. Jiganov, T. Johansson, S. Keleta, O. Khakimova, I. KochF. Kren, S. Kullander, A. Kupsc, A. Kuzmin, K. Lindberg, P. Marciniewski, B. Morosov, W. Oelert, C. Pauly, H. Pettersson, Y. Petukhov, A. Povtorejko, R. J. M. Y. Ruber, W. Scobel, R. Shafigullin, B. Shwartz, T. Skorodko, V. Sopov, J. Stepaniak, P. -E. Tegner, P. Thorngren Engblom, V. Tikhomirov, A. Turowiecki, G. J. Wagner, C. Wilkin, M. Wolke, J. Zabierowski, I. Zartova, J. Zlomanczuk, CELSIUS-WASA Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

The tensor polarisation of omega mesons produced in the pd -> He-3 omega reaction has been studied at two energies near threshold. The 3 He nuclei were detected in coincidence with the pi(0)pi(+)pi(-) or pi(0)gamma decay products of the omega. in contrast to the case of phi-meson production, the omega mesons are found to be unpolarised. This brings into question the applicability of the Okubo-Zweig-lizuka rule when comparing the production of vector mesons in low energy hadronic reactions. (C) 2008 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)258-262
Number of pages5
JournalPhysics Letters B
Volume668
Issue number4
DOIs
Publication statusPublished - 16 Oct 2008

Keywords

  • omega meson production
  • omega polarisation
  • OZI rule
  • DETECTOR FACILITY
  • PHI-MESON
  • THRESHOLD

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