Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
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在大型强子对撞机上使用 ATLAS 探测器寻找标准模型希格斯玻色子时观察到的新粒子

DOI:
10.1016/j.physletb.2012.08.020
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发表时间:
2012-09-17
期刊:
影响因子:
4.4
通讯作者:
Zwalinski, L.
Zwalinski, L.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Aad, G.;Abajyan, T.;Zwalinski, L.

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本文介绍了在大型强子对撞机上用ATLAS探测器在质子-质子碰撞中寻找标准模型希格斯玻色子的情况。所使用的数据集对应于2011年在根s = 7 TeV处收集的约4.8 fb(-1)的积分光度和2012年在根s = 8 TeV处收集的5.8 fb(-1)的积分光度。在8 TeV数据中的通道H -> ZZ(()*())-> 41,H -> gamma gamma和H -> WW(()*())-> ev mu v中的单独搜索与先前公布的搜索H -> ZZ(()*()),WW(*()),在7 TeV数据中的bar和tau(+)tau(-)上的B(B)以及来自7 TeV数据中的H -> ZZ(()*())-> 4l和H -> gamma伽马通道的改进分析的结果。明确的证据表明,生产的中性玻色子的测量质量为126.0 +/- 0.4(stat)+/- 0.4(sys)GeV。这一观测结果的显著性为5.9个标准差,对应的背景涨落概率为1.7 × 10(-9),与标准模型希格斯玻色子的产生和衰变是一致的。(C)2012年欧洲核子研究中心。Elsevier B. V.出版,保留所有权利。
A search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented. The datasets used correspond to integrated luminosities of approximately 4.8 fb(-1) collected at, root s = 7 TeV in 2011 and 5.8 fb(-1) at root s = 8 TeV in 2012. Individual searches in the channels H -> ZZ(()*()) -> 4l, H -> gamma gamma and H -> WW (()*()) -> ev mu v in the 8 TeV data are combined with previously published results of searches for H -> ZZ(()*()), WW(*()), b (b) over bar and tau(+)tau(-) in the 7 TeV data and results from improved analyses of the H -> ZZ(()*()) -> 4l and H -> gamma gamma channels in the 7 TeV data. Clear evidence for the production of a neutral boson with a measured mass of 126.0 +/- 0.4 (stat) +/- 0.4 (sys) GeV is presented. This observation, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7 x 10(-9), is compatible with the production and decay of the Standard Model Higgs boson. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.