Search for the exotic decay of the Higgs boson into two light pseudoscalars with four photons in the final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
A search for the exotic decay of the Higgs boson to a pair of light pseudoscalars, each of which subsequently decays into a pair of photons, is presented. The search uses data from proton-proton collisions at $\sqrt{s}$ = 13 TeV recorded with the CMS detector at the LHC that corresponds to an integrated luminosity of 132 fb$^{-1}$. The analysis probes pseudoscalar bosons with masses in the range 15-62 GeV, coming from the Higgs boson decay, which leads to four well-isolated photons in the final state. No significant deviation from the background-only hypothesis is observed. Upper limits are set on the product of the Higgs boson production cross section and branching fraction into four photons. The observed (expected) limits range from 0.80 (1.00) fb for a pseudoscalar boson mass of 15 GeV to 0.26 (0.24) fb for a mass of 62 GeV at 95% confidence level.
Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state of two muons and two $τ$ leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two muons and two b quarks in pp collisions at 13 TeV
在一个赝标粒子衰变为一对相反符号的μ子，另一个赝标粒子衰变为b $\overline{\mathrm{b}}$的假设下，研究了希格斯玻色子到一对轻赝标粒子a $_1$的奇异衰变.这样的特征在标准模型（SM）的一些扩展中得到了预测，包括接近最小的超对称性和带有额外标量单线态的两个希格斯偶态模型。这些结果是基于质子-质子碰撞的数据集，对应于35.9 fb $^{-1}$的积分光度，2016年在CERN LHC的CMS实验中积累了13 TeV的质心能量。没有观察到统计上显着的过剩相对于SM背景中的赝标量质量从20 GeV的搜索区域的一半的希格斯玻色子质量。在95%置信水平下，对产物横截面和支化分数的乘积$σ_{\mathrm{h}}\mathcal{B}$（h $\to$ a $_1$ a $_1$ $\to$ $μ^+μ^-\mathrm{b}\bar{\mathrm{b}}$）设定上限，范围为5至33 fb，取决于赝标量质量。假设$σ_{\mathrm{h}}$的SM预测，分支分数的相应限值为（1 $-$ 7）$\times$ 10 $^{-4}$。
Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two $τ$ leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
Search for a new pseudoscalar decaying into a pair of bottom and antibottom quarks in top-associated production in $\sqrt{s}$=13 TeV proton-proton collisions with the ATLAS detector
EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)（欧洲核子研究中心）
Search for light pseudoscalar boson pairs produced from decays of the 125 GeV Higgs boson in final states with two muons and two nearby tracks in pp collisions at $\sqrt{s} =$ 13 TeV
Search for Higgs boson decays into a pair of pseudoscalar particles in the $bbμμ$ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeV
Search for a heavy pseudoscalar Higgs boson decaying into a 125 GeV Higgs boson and a Z boson in final states with two tau and two light leptons at $\sqrt{s} =$ 13 TeV
Search for decays of the Higgs boson into a pair of pseudoscalar particles decaying into $b\bar{b}τ^+τ^-$ using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for light pseudoscalar bosons, pair-produced in Higgs boson decays in the four-electron final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)（欧洲核子研究中心）
Search for decays of the Higgs boson into pair-produced pseudoscalar particles decaying into $τ^+τ^-τ^+τ^-$ using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)（欧洲核子研究组织（CERN））
Search for an exotic decay of the 125 GeV Higgs boson to a pair of light pseudoscalars in the final state of two muons and two c-quarks in proton-proton collisions at $\sqrt{s} = 13\;\text{TeV}$ with CMS Open Data
Search for a light pseudoscalar Higgs boson in final states with boosted muon pairs and tau lepton pairs in proton-proton collisions at $\sqrt{s}$ = 13 TeV
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)（欧洲核子研究中心）
Search for a scalar or pseudoscalar dilepton resonance produced in association with a massive vector boson or top quark-antiquark pair in multilepton events at $\sqrt{s}$ = 13 TeV
Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Search for Higgs boson decays into a pair of pseudoscalar particles in the $γγτ_{\text{had}}τ_{\text{had}}$ final state using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for exotic decays of the Higgs boson into long-lived particles in $pp$ collisions at $\sqrt{s} = 13$ TeV using displaced vertices in the ATLAS inner detector
Search for exotic decays of the Higgs boson into $b\bar{b}$ and missing transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Search for light pseudoscalar boson pairs produced from Higgs boson decays using the 4$τ$ and 2$μ$2$τ$ final states in proton-proton collisions at $\sqrt{s}$ = 13 TeV
EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH (CERN)（欧洲核子研究组织（CERN））
Search for exotic Higgs boson decays H $\to$ $\mathcal{A}\mathcal{A}$ $\to$ 4$γ$ with events containing two merged diphotons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
