Yerevan Physics Institute, Yerevan, Armenia.
Phys Rev Lett. 2011 May 27;106(21):211802. doi: 10.1103/PhysRevLett.106.211802. Epub 2011 May 24.
A search for supersymmetry in the context of general gauge-mediated breaking with the lightest neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest is presented. The data sample corresponds to an integrated luminosity of 36 pb(-1) recorded by the CMS experiment at the LHC. The search is performed by using events containing two or more isolated photons, at least one hadronic jet, and significant missing transverse energy. No excess of events at high missing transverse energy is observed. Upper limits on the signal cross section for general gauge-mediated supersymmetry between 0.3 and 1.1 pb at the 95% confidence level are determined for a range of squark, gluino, and neutralino masses, excluding supersymmetry parameter space that was inaccessible to previous experiments.
呈现了在一般规范媒介破缺的背景下，将最轻的中性微子作为次轻超对称粒子，将引力微子作为最轻的超对称粒子的超对称搜索结果。该数据样本对应于 CMS 实验在 LHC 记录的 36 pb(-1)的积分亮度。通过使用包含两个或更多个孤立光子、至少一个强子喷注和显著的横向能量缺失的事件来进行搜索。在高横向能量缺失处没有观察到事件的过剩。对于一系列的 squark、gluino 和 neutralino 质量，在 95%置信水平下，对一般规范媒介超对称的信号截面的上限在 0.3 到 1.1 pb 之间进行了确定，排除了先前实验无法到达的超对称参数空间。
