标题： ATLAS中的希格斯粒子搜索 显示英文标题

标题： Higgs search at ATLAS

摘要： 本文总结了ATLAS实验在大型强子对撞机上进行的希格斯粒子搜索结果。 结果基于对应于中心质能为8 TeV时的积分亮度高达20.7 fb-1的数据样本和7 TeV时的4.6 fb-1的数据样本。 观察到了希格斯玻色子。 新玻色子的质量测量为125.5 +/- 0.2（统计）+0.5-0.6（系统）GeV，观测到的事例数与标准模型希格斯玻色子预期值的比值与单位一致，mu = 1.30 +/- 0.13（统计） +/- 0.14（系统）。 自旋和宇称特性以及耦合结构与标准模型希格斯玻色子的预测一致。 未发现其他希格斯态的证据。 显示英文摘要

摘要： In this paper the results of Higgs searches at the ATLAS experiment, operating at the LHC, are summarised. The results are based on data samples corresponding to an integrated luminosity of up to 20.7 fb-1 at a centre-of-mass energy of 8 TeV and 4.6 fb-1 at 7 TeV. The observation of a Higgs boson is established. The mass of the new boson is measured to be 125.5 +/- 0.2 (stat) +0.5-0.6 (syst) GeV, and the ratio of the observed number of events and expected from a Standard Model Higgs Boson is compatible with unity, mu = 1.30 +/- 0.13 (stat) +/- 0.14 (sys). The spin and parity properties as well as the couplings structure are compatible with those predicted for a Standard Model Higgs Boson. No evidence of further Higgs states is found.