Yerevan Physics Institute, Yerevan, Armenia.
Phys Rev Lett. 2010 Nov 19;105(21):211801. doi: 10.1103/PhysRevLett.105.211801. Epub 2010 Nov 17.
A search for narrow resonances in the dijet mass spectrum is performed using data corresponding to an integrated luminosity of 2.9 pb⁻¹ collected by the CMS experiment at the Large Hadron Collider. Upper limits at the 95% confidence level are presented on the product of the resonance cross section, branching fraction into dijets, and acceptance, separately for decays into quark-quark, quark-gluon, or gluon-gluon pairs. The data exclude new particles predicted in the following models at the 95% confidence level: string resonances, with mass less than 2.50 TeV, excited quarks, with mass less than 1.58 TeV, and axigluons, colorons, and E6 diquarks, in specific mass intervals. This extends previously published limits on these models.
使用 CMS 实验在大型强子对撞机上采集的对应于 2.9 pb⁻¹积分亮度的数据，对双喷注质量谱中的窄共振进行了搜索。在 95%置信水平下，对共振截面、分支比进入双喷注以及分别为夸克-夸克、夸克-胶子或胶子-胶子对衰变的接受度的乘积，给出了在以下模型中预测的新粒子的上限：质量小于 2.50 TeV 的弦共振、质量小于 1.58 TeV 的激发夸克以及在特定质量间隔内的轴胶子、颜色玻色子和 E6 双夸克。这扩展了先前对这些模型的限制。
