Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states
Search for a non-standard-model Higgs boson decaying to a pair of new light bosons in four-muon final states
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寻找非标准模型希格斯玻色子衰变成一对处于四μ子最终状态的新轻玻色子
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
S. Wasserbaech
中科院分区：
文献类型：
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作者：
A. Ferapontov;A. Garabedian;S. Jabeen;G. Kukartsev;T. Sinthuprasith;T. Speer;P. Schlein;G. Jeng;S. Wasserbaech
报告的结果是对非标准模型希格斯玻色子衰变成一对新的轻玻色子的研究，每个玻色子都衰变成 μ + μ − 最终状态。新的玻色子可以立即产生，也可以通过衰变链产生。该数据集对应于 5 的积分光度。 3 fb − 1 √ s = 7 TeV 处的质子-质子碰撞，由 LHC 的 CMS 实验于 2011 年记录。这种希格斯玻色子衰变在新物理学的几种场景中被预测，包括具有扩展希格斯扇区或隐藏谷的超对称模型。因此，搜索结果对于确定在大型强子对撞机希格斯玻色子搜索中观察到的新粒子是否具有标准模型希格斯玻色子预期的特性相关。与标准模型过程的预期产量相比，没有观察到过多的事件。与模型无关的上限为 0 。 86±0。获得横截面乘以支化分数乘以验收结果的06 fb。这些结果适用于广泛的新物理场景，与两个基准模型的预测进行了比较，作为大于 86 GeV / c 2 的希格斯玻色子质量和 0.25-3.55 GeV / c 2 范围内的新轻玻色子质量的函数。
Results are reported from a search for non-standard-model Higgs boson decays to pairs of new light bosons, each of which decays into the μ + μ − final state. The new bosons may be produced either promptly or via a decay chain. The data set corresponds to an integrated luminosity of 5 . 3 fb − 1 of proton–proton collisions at √ s = 7 TeV, recorded by the CMS experiment at the LHC in 2011. Such Higgs boson decays are predicted in several scenarios of new physics, including supersymmetric models with extended Higgs sectors or hidden valleys. Thus, the results of the search are relevant for establishing whether the new particle observed in Higgs boson searches at the LHC has the properties expected for a standard model Higgs boson. No excess of events is observed with respect to the yields expected from standard model processes. A model-independent upper limit of 0 . 86 ± 0 . 06 fb on the product of the cross section times branching fraction times acceptance is obtained. The results, which are applicable to a broad spectrum of new physics scenarios, are compared with the predictions of two benchmark models as functions of a Higgs boson mass larger than 86 GeV / c 2 and of a new light boson mass within the range 0.25–3.55 GeV / c 2 .
在 CDF 寻找与 W 和 Z 玻色子相关的多个轻子的异常产生
影响因子：
5
作者：
Aaltonen T
通讯作者：
Aaltonen T
影响因子：
4.4
作者：
Chatrchyan, S.;Khachatryan, V.;Wenman, D.
通讯作者：
Wenman, D.