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首页> 外文期刊>The European Physical Journal, A. Hadrons and Nuclei >Excitation of color degrees of freedom of nuclear matter and J/ψ suppression
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Excitation of color degrees of freedom of nuclear matter and J/ψ suppression

机译:激发核物质的颜色自由度和抑制J /ψ

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摘要

In high-energy nuclear collisions, the conventional Glauber model is commonly used to evaluate the contribution to J/ψ suppression originating from the inelastic interaction with colorless bound nucleons. This requires an effective value for the J/250L?nucleon absorption cross-section which is larger than theoretically expected. On the other hand, multiple nucleon-nucleon collisions, mediated by color exchange interactions, excite their color degrees of freedom. We investigate the importance of this effect and find that these excited states provide a larger cross-section for J/ψ absorption. We conclude that the related corrections are important to explain the effective value extrapolated from experiment.
机译:在高能核碰撞中,常规的Glauber模型通常用于评估J /ψ抑制的贡献,该抑制源于与无色结合核子的非弹性相互作用。这要求J /250Lα核子吸收截面的有效值大于理论上的预期。另一方面,由颜色交换相互作用介导的多个核子-核子碰撞激发了它们的颜色自由度。我们研究了这种效应的重要性,发现这些激发态为J /ψ吸收提供了较大的横截面。我们得出结论,相关的修正对于解释实验得出的有效值很重要。

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