论文标题
在使用139 $ \ text {fb}^{ - 1} $的Proton-Proton数据录制的Proton-Proton数据的$ 139 $ \ text {fb}^$中，搜索具有矢量 - 波森融合签名的事件中的无形Higgs-Boson衰变。
Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 $\text{fb}^{-1}$ of proton-proton data recorded by the ATLAS experiment
论文作者
论文摘要
据报道，通过载体 - 玻色子融合产生的Higgs玻色子并随后腐烂成不可见的颗粒。该分析使用$ pp $ collision数据的139 $ \ text {fb}^{ - 1} $在$ \ sqrt {s} $ = 13 $ = 13 $ \ text {tev} $中，由LHC的Atlas检测器记录。发现观察到的事件数量与标准模型过程的背景期望一致。对于标量Higgs玻色子，质量为125 $ \ text {gev} $和标准型号生产横截面，观察到的上限为$ 0.145 $，将其衰减的分支分支为95％的置信度，预期限额为95％，预期限额为$ 0.103 $。这些结果在模型的背景下进行解释，其中Higgs玻色子充当了暗物质的门户，并且将限制设置在弱相互作用的巨大颗粒和核子的散射横截面上。还研究了带有50美元$ \ text {gev} $到2 $ \ text {tev} $的额外标量玻色子的无形衰落，并且还研究了横截面上分支的派生上限，随着质量从1.0 $ \ text {pb} $增加的质量下降，质量从1.0 $ \ text {pb} $增加了scalar -boson的质量{质量为2 $ \ text {tev} $。
A direct search for Higgs bosons produced via vector-boson fusion and subsequently decaying into invisible particles is reported. The analysis uses 139 $\text{fb}^{-1}$ of $pp$ collision data at a centre-of-mass energy of $\sqrt{s}$=13 $\text{TeV}$ recorded by the ATLAS detector at the LHC. The observed numbers of events are found to be in agreement with the background expectation from Standard Model processes. For a scalar Higgs boson with a mass of 125 $\text{GeV}$ and a Standard Model production cross section, an observed upper limit of $0.145$ is placed on the branching fraction of its decay into invisible particles at 95% confidence level, with an expected limit of $0.103$. These results are interpreted in the context of models where the Higgs boson acts as a portal to dark matter, and limits are set on the scattering cross section of weakly interacting massive particles and nucleons. Invisible decays of additional scalar bosons with masses from 50 $\text{GeV}$ to 2 $\text{TeV}$ are also studied, and the derived upper limits on the cross section times branching fraction decrease with increasing mass from 1.0 $\text{pb}$ for a scalar boson mass of 50 $\text{GeV}$ to 0.1 $\text{pb}$ at a mass of 2 $\text{TeV}$.
