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首页> 外文期刊>Physics Letters, B. Nuclear Physics and High Energy Physics >Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H - gamma gamma decay channel at root s=8 TeV with the ATLAS detector
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Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H - gamma gamma decay channel at root s=8 TeV with the ATLAS detector

机译:使用由ATLAS探测器在根S = 8 TeV处在H->伽玛伽玛衰变通道中测量的差分横截面,对有效拉格朗日中非标准希格斯玻色子相互作用的约束

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摘要

The strength and tensor structure of the Higgs boson's interactions are investigated using an effective Lagrangian, which introduces additional CP-even and CP-odd interactions that lead to changes in the kinematic properties of the Higgs boson and associated jet spectra with respect to the Standard Model. The parameters of the effective Lagrangian are probed using a fit to five differential cross sections previously measured by the ATLAS experiment in the H ->gamma gamma decay channel with an integrated luminosity of 20.3fb(-1) at root s= 8TeV. Inorder to perform a simultaneous fit to the five distributions, the statistical correlations between them are determined by re-analysing the H ->gamma gamma candidate events in the proton-proton collision data. No significant deviations from the Standard Model predictions are observed and limits on the effective Lagrangian parameters are derived. The statistical correlations are made publicly available to allow for future analysis of theories with non-Standard Model interactions. (C) 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V
机译:使用有效的拉格朗日研究希格斯玻色子相互作用的强度和张量结构,它引入了额外的CP偶数和CP奇数相互作用,从而导致希格斯玻色子的运动学性质和相关的射流谱相对于标准模型发生了变化。有效拉格朗日参数的拟合是通过对先前由ATLAS实验在H->伽玛伽玛衰变通道中由ATLAS实验测得的五个差分横截面进行拟合来进行的,其积分光度为20.3fb(-1),根s = 8TeV。为了同时拟合这五个分布,可以通过重新分析质子-质子碰撞数据中的H->伽马伽马候选事件来确定它们之间的统计相关性。没有观察到与标准模型预测的显着偏差,并且得出了有效拉格朗日参数的限制。统计相关性是公开可用的,以便将来对具有非标准模型交互作用的理论进行分析。 (C)2015年欧洲核子研究中心(CERN),受益于ATLAS合作。由Elsevier B.V发布

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