论文标题
在$ \ sqrt {s} = $ 13 tev的最终状态下，在一个扩展的希格斯扇区中搜索新粒子的最终状态。
Search for new particles in an extended Higgs sector with four b quarks in the final state at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
提出了一个搜索扩展的希格斯扇区，其特征是X型旋转X型bosons X损失，其本身会衰减到对成对的底部夸克对。分析仅限于$ m_ϕ $从25到100 GEV，$ m_ \ mathrm {x} $从1到3 tev。对于这些质量范围，预计每$ ϕ $玻色子的衰减产物将合并为单个大型射流。喷气子结构和风味识别技术用于识别这些喷气机。该搜索基于$ \ sqrt {s} = $ 13 TEV的CERN LHC Proton-Proton碰撞数据，该数据在2016- 2018年与CMS检测器收集，对应于138 fb $^{ - 1} $的集成光度。 X $ \至$ $ \至$ $ $ $ \至$ $ $ \ $ \ $ \ to $（\ Mathrm {b \ bar {b}}）的产品的产品设置为型号的限制（\ $ \ $ \ $ \ $ $ \ $ \ $ $ \ $ \ mathrm {b \ bar {b}} $分支分数假定为100％。这些限制是此过程中的第一个限制，在30到1 Fb之间，在95％的置信度下，所考虑的质量范围在95％的置信度之间。
A search for an extended Higgs sector, characterized by a massive resonance X decaying to a pair of spin-0 bosons $ϕ$ that themselves decay to pairs of bottom quarks, is presented. The analysis is restricted to the mass ranges $m_ϕ$ from 25 to 100 GeV and $m_\mathrm{X}$ from 1 to 3 TeV. For these mass ranges, the decay products of each $ϕ$ boson are expected to merge into a single large-radius jet. Jet substructure and flavor identification techniques are used to identify these jets. The search is based on CERN LHC proton-proton collision data at $\sqrt{s} =$ 13 TeV, collected with the CMS detector in 2016-2018, corresponding to an integrated luminosity of 138 fb$^{-1}$. Model-specific limits are set on the product of the production cross section and branching fraction for X $\to$ $ϕϕ$ $\to$ $(\mathrm{b\bar{b}})(\mathrm{b\bar{b}})$ as a function of mass, where both the X $\to$ $ϕϕ$ and $ϕ$ $\to$ $\mathrm{b\bar{b}}$ branching fractions are assumed to be 100%. These limits are the first of their kind on this process, ranging between 30 and 1 fb at 95% confidence level for the considered mass ranges.
