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arXiv 0906.5508hep-ex
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用ILD实验分离电荷子和中性子

Chargino and Neutralino Separation with the ILD Experiment

Taikan Suehara, Jenny List

摘要:

为国际直线对撞机提出的探测器概念优化的基准过程之一是在mSugra情景中产生电荷子和中性子对,其中电荷子-1和中性子-2质量简并分别衰变为W+中性子-1和Z+中性子-1。在这种情况下,在完全强子衰变模式的两个过程的分离是非常敏感的喷流能量分辨率,从而粒子流的性能。在质心能量为500 GeV,积分亮度为500 fb-1,束流偏振为P(e+,e-)=(30%,-80%)的条件下,对ILD探测器概念所能达到的质量分辨率和截面不确定度进行了全面模拟研究。对于电荷子-1和中性子-2对产生截面,统计精度分别达到0.84%和2.75%。电荷伴子-1、中性伴子-2和中性伴子-1的质量可以分别以2.9 GeV、1.7 GeV和1.0 GeV的统计精度确定。

英文摘要:

One of the benchmark processes for the optimisation of the detector concepts proposed for the International Linear Collider is Chargino and Neutralino pair production in an mSugra scenario where Chargino-1 and Neutralino-2 are mass degenerate and decay into W+Neutralino-1 and Z+Neutralino-1, respectively. In this case the separation of both processes in the fully hadronic decay mode is very sensitive to the jet energy resolution and thus to the particle flow performance. The mass resolutions and cross-section uncertainties achievable with the ILD detector concept are studied in full simulation at a center of mass energy of 500 GeV, an integrated luminosity of 500 fb-1 and beam polarisations of P(e+,e-) = (30%, -80%). For the Chargino-1 and Neutralino-2 pair production cross-sections, statistical precisions of 0.84% and 2.75% are achieved, respectively. The masses of Chargino-1, Neutralino-2 and Neutralino-1 can be determined with a statistical precision of 2.9 GeV, 1.7 GeV and 1.0 GeV, respectively.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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