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Properties of neutral charmed mesons in pA interactions at 70 GeV

机译:在70 GeV的pA相互作用中中性魅力介子的性质

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The results of data handling for the E-184 experiment involving the irradiation of the active target, consisting of carbon, silicon, and lead plates by a 70-GeV proton beam are presented. When the two-prong neutral charmed meson decay signal was selected and the cross section for charm production at a near-threshold energy was estimated (σ(cc?) = 7.1 ± 2.4(stat.) ± 1.4(syst.) μbucleon), some properties of D0 and D?0 were investigated. These include the atomic-weight dependence of the cross section on the target mass number (its A dependence); the differential cross sections dσ/dpt2 and dσ/dxF; and the dependence of the parameter α on xF, pt2, and plab. The experimental results are compared with the predictions of the FRITIOF7. 02 program.
机译:给出了E-184实验的数据处理结果,该实验涉及用70-GeV质子束辐照由碳,硅和铅板组成的活性靶材。当选择两叉中性有魅力的介子衰变信号并估计在接近阈值能量时产生魅力的横截面(σ(cc?)= 7.1±2.4(stat。)±1.4(syst。)μb/核子),研究了D0和D≥0的一些性质。这些包括横截面的原子量对目标质量数的依赖性(其A依赖性);微分横截面dσ/ dpt2和dσ/ dxF;以及参数α对xF,pt2和plab的依赖性。将实验结果与FRITIOF7的预测进行了比较。 02程序。

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