论文标题
在$ \ sqrt {s} = $ 13 tev中，通过vector-boson Fusion在higgs玻色子生产中搜索黑色光子。
Search for dark photons in Higgs boson production via vector boson fusion in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
搜索了通过向量玻色子融合产生的希格斯玻色子，并腐烂到未发现的粒子和一个孤立的光子。该搜索是由CMS协作在LHC上执行的，该数据集使用与130 fb $^{ - 1} $的集成光度相对应的数据集，该数据集在2016 - 2018年的13个TEV中记录。没有发现超出标准模型背景的预期的大量事件。结果在理论模型的背景下进行解释，其中未检测到的粒子是无质量的深色光子。横截面的乘积设置了上限，以通过向量玻色子融合生产和这种Higgs玻色子衰变的分支分数，这是Higgs玻色子质量的函数。对于HIGGS玻色子质量为125 GEV，假设标准模型产量率，观察到的（预期）分支分数的95％置信度上限为3.5（2.8）％。这是在矢量玻色融合通道中首次搜索此类衰变。结合先前对HIGGS玻色子与Z玻色子相关的搜索，在95％置信度下观察到的（预期）分支分数为2.9（2.1）％的上限。
A search is presented for a Higgs boson that is produced via vector boson fusion and that decays to an undetected particle and an isolated photon. The search is performed by the CMS Collaboration at the LHC, using a data set corresponding to an integrated luminosity of 130 fb$^{-1}$, recorded at a center-of-mass energy of 13 TeV in 2016-2018. No significant excess of events above the expectation from the standard model background is found. The results are interpreted in the context of a theoretical model in which the undetected particle is a massless dark photon. An upper limit is set on the product of the cross section for production via vector boson fusion and the branching fraction for such a Higgs boson decay, as a function of the Higgs boson mass. For a Higgs boson mass of 125 GeV, assuming the standard model production rates, the observed (expected) 95% confidence level upper limit on the branching fraction is 3.5 (2.8)%. This is the first search for such decays in the vector boson fusion channel. Combination with a previous search for Higgs bosons produced in association with a Z boson results in an observed (expected) upper limit on the branching fraction of 2.9 (2.1)% at 95% confidence level.
