Measuring superparticle masses at hadron collider using the transverse mass kink
Measuring superparticle masses at hadron collider using the transverse mass kink
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DOI：
10.1088/1126-6708/2008/02/035
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发表时间：
2007-11
影响因子：
5.4
通讯作者：
W. Cho;Kiwoon Choi;Yeong Gyun Kim;Chan Beom Park
中科院分区：
文献类型：
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作者：
W. Cho;Kiwoon Choi;Yeong Gyun Kim;Chan Beom Park
我们详细研究了对撞机可观测到的mT2，用于对产生的超粒子衰变为可见粒子和对不可见的最轻超对称粒子（LSPs）。导出了mT2在所有事件上的最大值（mT2max）的解析表达式。注意到，如果每个超粒子的衰变积涉及多个可见粒子，则mT2max是试验LSP质量的函数，mχ在mχ =真LSP质量处具有一个结结结构，可以同时确定母超粒子质量和LSP质量。为了了解如何很好地从对撞机数据构建mT2max，对一些超粒子谱进行了胶子mT2的蒙特卡罗分析。
We present a detailed study of the collider observable mT2 applied for pair-produced superparticles decaying to visible particles and a pair of invisible lightest supersymmetric particles (LSPs). Analytic expressions of the maximum of mT2 over all events (mT2max) are derived. It is noticed that if the decay product of each superparticle involves more than one visible particle, mT2max being a function of the trial LSP mass mχ has a kink structure at mχ = true LSP mass, which can be used to determine the mother superparticle mass and the LSP mass simultaneously. To see how well mT2max can be constructed from collider data, a Monte-Carlo analysis of the gluino mT2 is performed for some superparticle spectra.