论文标题
在Proton-Proton碰撞中的四个B Quark最终状态中搜索Higgs Boson对生产，$ \ sqrt {s} = $ 13 TEV
Search for Higgs boson pair production in the four b quark final state in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
提出了通过Gluon和Vector Boson融合产生的Higgs玻色子对搜索，重点是四个B夸克最终状态。数据样本由质子 - 普罗顿碰撞在13个TEV的质量中心能量下，在LHC处使用CMS检测器收集，对应于138 fb $^{ - 1} $的集成光度。没有观察到与仅背景假设的偏差。 HIGGS玻色子对生产横截面的95％置信度上限为3.9倍，预期值为7.8。约束也设置在Higgs字段自耦合的修饰符上，$κ_λ$，以及两个Higgs玻色子与两个矢量玻色子的耦合，$κ___\ mathrm {2v} $。观察到的（预期的）在95％的置信度下的允许间隔为$ - $ 2.3 $ \ lt $ $ $ $ $ $ $ $ $ $ $ $ \ lt $ 9.4（$ 5.0 $ \ lt $ \ lt $ \ lt $ $ $ $ $κ_λ$ $ \ lt $ 12.0）和$ - $ - $ - 0.1 $ \ lt $ \ $ $ $ $ $ $ $ $κ_\ th.2 $ 0.4 $ \ lt $ $ $κ_\ MATHRM {2V} $ $ \ lt $ 2.5）。这些是迄今为止在HH生产横截面和$κ__\ Mathrm {2v} $耦合上的最严格观察到的约束。
A search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, and corresponds to an integrated luminosity of 138 fb$^{-1}$. No deviation from the background-only hypothesis is observed. A 95% confidence level upper limit on the Higgs boson pair production cross section is observed at 3.9 times the standard model prediction for an expected value of 7.8. Constraints are also set on the modifiers of the Higgs field self-coupling, $κ_λ$, and of the coupling of two Higgs bosons to two vector bosons, $κ_\mathrm{2V}$. The observed (expected) allowed intervals at the 95% confidence level are $-$2.3 $\lt$ $κ_λ$ $\lt$ 9.4 ($-$5.0 $\lt$ $κ_λ$ $\lt$ 12.0) and $-$0.1 $\lt$ $κ_\mathrm{2V}$ $\lt$ 2.2 ($-$0.4 $\lt$ $κ_\mathrm{2V}$ $\lt$ 2.5). These are the most stringent observed constraints to date on the HH production cross section and on the $κ_\mathrm{2V}$ coupling.
