Yerevan Physics Institute, Yerevan, Armenia.
Phys Rev Lett. 2011 Nov 11;107(20):201804. doi: 10.1103/PhysRevLett.107.201804. Epub 2011 Nov 10.
A study of events with missing transverse energy and an energetic jet is performed using pp collision data at a center-of-mass energy of 7 TeV. The data were collected by the CMS detector at the LHC, and correspond to an integrated luminosity of 36 pb(-1). An excess of these events over standard model contributions is a signature of new physics such as large extra dimensions and unparticles. The number of observed events is in good agreement with the prediction of the standard model, and significant extension of the current limits on parameters of new physics benchmark models is achieved.
采用质心能量为 7 TeV 的 pp 碰撞数据对具有缺失横动量和高能量喷注的事例进行了研究。这些数据是由 LHC 的 CMS 探测器采集的，对应于 36 pb(-1) 的积分亮度。这些事例相对于标准模型贡献的过剩是新物理如大额外维数和无伴随粒子的一个特征。观测到的事例数与标准模型的预言相符，并且对新物理基准模型参数的现有限制有显著的扩展。
