We have studied the feasibility of the experimental determination of the width of a D meson in a nuclear medium by using the method of the nuclear transparency. The cross section for inclusive production of a D+ in different nuclei is evaluated, taking care of the D+ absorption in the nucleus, or equivalently, the survival probability of the D+ in its way out of the nucleus from the point of production. We use present values of the in medium width of D mesons and calculate ratios of the cross sections for different nuclei to the C12 nucleus as reference. We find ratios of the order of 0.6 for heavy nuclei, a large deviation from unity, which indicates that the method proposed is adequate to measure this relevant magnitude, so far only known theoretically.

中文翻译：

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关于透明率下核介质中 D 介子宽度的测定


我们研究了使用核透明方法实验测定核介质中 D 介子宽度的可行性。评估不同原子核中包容性产生 D + 的横截面，注意 D + 在原子核中的吸收，或者等效地，D+ 从产生点从原子核中传出的存活概率。我们使用 D 介子的中等宽度的现值，并计算不同核与 C12 核的横截面比作为参考。我们发现重核的比率为 0.6 量级，与一的偏差很大，这表明所提出的方法足以测量这个相关的量级，到目前为止只是理论上的已知。