Erratum to: Measurements of prompt charm production cross-sections in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
Erratum to: Measurements of prompt charm production cross-sections in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
复制标题
勘误：在 s = 13 $$ sqrt{s}=13 $$ TeV 时 pp 碰撞中瞬发魅力产生横截面的测量
DOI：
10.1007/jhep09(2016)013
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发表时间：
2016
影响因子：
5.4
通讯作者：
Aaij R
中科院分区：
文献类型：
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作者：
Aaij R
为了节省计算资源，如果所有带电终态粒子都在几何可接受范围内（定义为极角10< θ<400 mrad），则模拟事件仅通过LHCb探测器的完全模拟传播。该要求的效率是根据省略要求的专用模拟样本估计的，并且不会通过探测器模拟传播。由于所有粒子都在可接受范围内的组态的效率是在介子（pT，y）的仓中不同地确定的，因此创建一个D +→ D 0 π+，D 0 → K-π+的样本足以评估D +→ D 0 π+和D 0 → K-π+的效率。在计算D 0效率时犯了一个错误，因为这里也包括了从D π +到软π介子的角度要求。这一点现在已经得到了纠正，最明显的是，在0≤ pT< 1 GeV/c的范围内，对于大的y值，测量的横截面减小了。第二个问题是在模拟中使用的细分箱的粗粒化中存在一个错误，最终用于公布的数字。影响很小，主要影响低pT箱，但导致略微低估了D 0横截面。
To save computing resources, simulated events are only propagated through the full simulation of the LHCb detector if all charged final state particles are within the geometrical acceptance, defined to be 10< θ< 400mrad in the polar angle. The efficiency for this requirement is estimated from dedicated simulated samples with the requirement omitted, and which are not propagated through the detector simulation. As the efficiencies for configurations with all particles inside the acceptance are determined differentially in bins of meson (pT, y), it is sufficient to create a sample of D∗+→ D0π+, with D0→ K-π+ to evaluate both the D∗+→ D0π+ and the D0→ K-π+ efficiencies. A mistake was made in computing the D0 efficiency in that also here the angular requirement on the soft pion from the D∗+ was included. This has now been corrected, most notably leading to a decrease of the measured cross-section in the range 0≤ pT< 1 GeV/c for large values of y.The second issue was a bug in the coarse-graining of the fine binning used in the simulation to the final bins used for the published numbers. The effect was small, mainly affecting the low-pT bins, but resulted in a slight underestimate of the D0 cross-section.