论文标题
$ e^{+} e^{ - } \ rightarrow c \ bar {c} $签名的生产和测量
Production and measurement of $e^{+}e^{-}\rightarrow c\bar{c}$ signatures at the 250 GeV ILC
论文作者
论文摘要
本文档首次讨论了横截面测量的实验前景和$ e^{ - } e^{ - } e^{+} \ rightArrow c \ bar {c} $在国际线性碰撞器操作极性光束时在250 GEV处的前向反向不对称。横截面将归一化为总的辐射横截面。我们讨论了分析的结果，假设在基线项目中预见了2000 fb $^{ - 1} $的集成光度。该测量需要确定由$ c $ quark识别的两种喷气机的费用。使用$ \ frac {de} {dx} $信息的tpc的信息，使用检测器ILD的精确微vertex检测器以及带电的KAON识别的精确微vertex检测器最佳地进行电荷测量。由于光束极化，我们可以将电动耦合的四种独立手性组合分开，从而增强对新物理效应的敏感性。我们表明，由于ILC对于这些可观察到的物体将达到的前所未有的精度，ILC将对超出标准模型的兰德尔晒黑共振的存在敏感。
This document discusses for the first time the experimental prospects on the measurement of cross section and the forward-backward asymmetry in $e^{-}e^{+}\rightarrow c\bar{c}$ collisions at 250 GeV at the International Linear Collider operating polarised beams. The cross section will be normalised to the total hadronic cross section. We discuss the results for an analysis assuming the integrated luminosity of 2000 fb$^{-1}$ foreseen in the baseline project. The measurement requires determining the charge of both jets identified as originated by a $c$-quark. The charge measurement is optimally performed using the precise micro-vertex detector of the detector ILD and the charged kaon identification provided by the $\frac{dE}{dx}$ information of its TPC. Thanks to the beam polarisation, we can separate the four independent chirality combinations of the electroweak couplings, enhancing in this way the sensitivity to new physics effects. We show that due to the unprecedented precision that will be achieved by the ILC for these observables, the ILC will be sensitive to the existence of beyond the standard model Randal Sundrum resonances of several tens of TeV.
