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arXiv 1107.3853hep-phhep-ex
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在μ子对撞机上精确测量slepton的可行性

Feasibility of slepton precision measurements at a muon collider

A. Freitas

摘要:

高能μ子对撞机的探测器必须通过在束管周围安装屏蔽材料来保护束μ子的衰变产物。在这篇文章中,通过研究轻子的超伴子slepton的产生,这些探测器盲区对具有不可见末态粒子的新物理学特征的影响被展示出来。特别注意的是大背景的双光子碰撞。它演示了如何控制这些背景的影响,通过实施适当的削减或运行在两个不同的质心能量,从而允许精确测量的质量和自旋的slepton。然而,这些方法对于slepton和它们的衰变产物之间的小质量差异变得无效,并且在这种情况下,在μ子对撞机上分析slepton信号将是困难的。

英文摘要:

Detectors at a high-energy muon collider must be protected from the decay products of beam muons by installing shielding material around the beam pipe. In this article, the impact of these blind detector regions on new-physics signatures with invisible final-state particles is shown by studying the production of sleptons, the superpartners of leptons. Special attention is given to large backgrounds from two-photon collisions. It is demonstrated how the influence of these backgrounds can be controlled by implementing suitable cuts or running at two different center-of-mass energies, thus permitting precision measurements of the mass and spin of the sleptons. However, these methods become ineffective for small mass differences between the sleptons and their decay products, and it will be difficult to analyze the slepton signal at a muon collider in this case.

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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