Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at sqrt(s) = 8 TeV
Search for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at sqrt(s) = 8 TeV
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DOI：
10.1007/jhep10(2017)076
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发表时间：
2017-01
期刊：
影响因子：
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通讯作者：
Cms Collaboration
中科院分区：
文献类型：
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作者：
Cms Collaboration
基于具有扩展标量扇区的模型，对从 125 GeV 希格斯玻色子的标准模型到一对轻玻色子的衰变进行了搜索。在包含四个 τ 轻子、两个 μ 子和两个 b 夸克、或两个 μ 子和两个 τ 轻子的最终状态下探测 5 到 62.5 GeV 之间的轻玻色子质量。结果来自质子-质子碰撞的数据，对应于 19.7 fb−1 的积分光度，由 LHC 的 CMS 实验在 8 TeV 的质心能量下累积。数据中没有发现这种奇异衰变的证据。多个信号过程的横截面和分支分数的乘积设置了上限。结果还与双希格斯双峰模型的预测进行了比较，包括带有额外标量单峰的模型。
A search is presented for decays beyond the standard model of the 125 GeV Higgs bosons to a pair of light bosons, based on models with extended scalar sectors. Light boson masses between 5 and 62.5 GeV are probed in final states containing four τ leptons, two muons and two b quarks, or two muons and two τ leptons. The results are from data in proton-proton collisions corresponding to an integrated luminosity of 19.7 fb− 1, accumulated by the CMS experiment at the LHC at a center-of-mass energy of 8 TeV. No evidence for such exotic decays is found in the data. Upper limits are set on the product of the cross section and branching fraction for several signal processes. The results are also compared to predictions of two-Higgs-doublet models, including those with an additional scalar singlet.