E_{kin} = 3.5 GeV时p+p反应中的Ω和η介子产生
Omega and eta meson production in p+p reactions at E_{kin} = 3.5 GeV
摘要:
我们报道了在3.5 GeV束流动能的p+p反应中唯一产生的omega和eta介子。测定了两种介子的产生截面、角分布和Dalitz图。此外,在该能量下,N(1535)共振在η产生中的相对贡献被评估。结果表明,通过N(1535)产生的η介子呈现各向同性角分布,而直接产生的η介子呈现强的各向异性角分布。Ω介子表现出轻微的各向异性角分布。
英文摘要:
We report on the exclusive production of omega and eta mesons in p+p reactions at 3.5 GeV beam kinetic energy. Production cross sections, angular distributions and Dalitz plots of both mesons were determined. Moreover, the relative contribution of the N(1535) resonance in eta production at this energy was evaluated. We conclude that eta mesons produced via N(1535) exihibit an isotropic angular distribution, whereas those produced directly show a strong anisotropic distribition. omega mesons show a slightly anisotropic angular distribition.
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