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arXiv 0806.2945nucl-ex
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在1360和1450 MeV的pd-> 3 He +omega反应中omega介子的极化

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

K. Schonning, Chr. Bargholtz, M. Bashkanov, M. Berlowski, D. Bogoslawsky, H. Calen, H. Clement, L. Demirors, C. Ekstrom, K. Fransson, L. Geren, L. Gustafsson, B… 展开作者

K. Schonning, Chr. Bargholtz, M. Bashkanov, M. Berlowski, D. Bogoslawsky, H. Calen, H. Clement, L. Demirors, C. Ekstrom, K. Fransson, L. Geren, L. Gustafsson, B. Hoistad, G. Ivanov, M. Jacewicz, E. Jiganov, T. Johansson, S. Keleta, O. Khakimova, I. Koch, F. 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

摘要:

本文研究了Pd-> 3 He +omega反应中产生的omega介子在阈附近两个能量下的张量极化。3 He核与Ω的π 0 π + π-或π 0 γ衰变产物相一致。与产生phi介子的情况相反,发现omega介子是非极化的。这就对Okubo-Zweig-Iizuka规则在比较低能强子反应中矢量介子的产生时的适用性提出了质疑。

英文摘要:

The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with the pi0pi+pi- or pi0gamma 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-Iizuka rule when comparing the production of vector mesons in low energy hadronic reactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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