A search for dark matter particles is performed using events with a Z boson candidate and large missing transverse momentum. The analysis is based on proton-proton collision data at a center-of-mass energy of 13 TeV, collected by the CMS experiment at the LHC in 2016-2018, corresponding to an integrated luminosity of 137 fb$^{-1}$. The search uses the decay channels Z $\to$ ee and Z $\to$ $μμ$. No significant excess of events is observed over the background expected from the standard model. Limits are set on dark matter particle production in the context of simplified models with vector, axial-vector, scalar, and pseudoscalar mediators, as well as on a two-Higgs-doublet model with an additional pseudoscalar mediator. In addition, limits are provided for spin-dependent and spin-independent scattering cross sections and are compared to those from direct-detection experiments. The results are also interpreted in the context of models of invisible Higgs boson decays, unparticles, and large extra dimensions.
Search for new physics in events with a leptonically decaying Z boson and a large transverse momentum imbalance in proton-proton collisions at $\sqrt{s} $ = 13 TeV
Search for pair-production of vector-like quarks in $pp$ collision events at $\sqrt{s}=13$ TeV with at least one leptonically decaying $Z$ boson and a third-generation quark with the ATLAS detector
Search for associated production of a $Z$ boson with an invisibly decaying Higgs boson or dark matter candidates at $\sqrt{s}=13$ TeV with the ATLAS detector
Invariant-mass distribution of jet pairs produced in association with a $W$ boson in \ppbar collisions at $\sqrt{s}=1.96$ TeV using the full CDF Run II data set
Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a $Z$ boson in $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector
Search for light resonances decaying to boosted quark pairs and produced in association with a photon or a jet in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for heavy neutral Higgs bosons produced in association with $b$-quarks and decaying into $b$-quarks at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for Dark Matter Produced in Association with a Higgs Boson Decaying to $b\bar b$ using 36 fb$^{-1}$ of $pp$ collisions at $\sqrt s=13$ TeV with the ATLAS Detector
Search for the Standard Model Higgs boson decaying into $b\bar{b}$ produced in association with top quarks decaying hadronically in $pp$ collisions at $\sqrt{s}$=8 TeV with the ATLAS detector
Search for the Standard Model Higgs boson produced in association with a vector boson and decaying to a b-quark pair with the ATLAS detector
这封信介绍了在大型强子对撞机上用ATLAS探测器直接搜索质量为110 < m（H）< 130 GeV produced in association with a W or Z boson and decaying to bb. Three decay channels are considered: ZH->llbb，WH->lvbb，ZH->vvbb的标准模型希格斯玻色子的结果，其中l对应于电子或μ子。在ATLAS于2011年收集的对应于4.7/fb的积分亮度的7 TeV pp碰撞数据集中，没有观察到希格斯玻色子产生的证据。在110 - 130 GeV的质量范围内，在95%的置信水平下，希格斯玻色子产生的排除极限为标准模型截面的2.5至5.5倍。对于相同的质量间隔，预期排除限范围在2.5和4.9之间。
Search for dark matter produced in association with a Higgs boson decaying to two bottom quarks in $pp$ collisions at $\sqrt{s} = 8$ TeV with the ATLAS detector
Search for charged Higgs bosons produced in association with a top quark and decaying via $H^{\pm} \rightarrow τν$ using $pp$ collision data recorded at $\sqrt{s} = 13$ TeV by the ATLAS detector
Search for the Standard Model Higgs boson produced in association with a vector boson and decaying into a tau pair in $pp$ collisions at $\sqrt{s} = 8$ TeV with the ATLAS detector
Search for dark matter produced in association with a Higgs boson decaying to a pair of bottom quarks in proton-proton collisions at $\sqrt{s} =$ 13 TeV
Search for dark matter produced in association with a dark Higgs boson decaying into $W^\pm W^\mp$ or $ZZ$ in fully hadronic final states from $\sqrt{s}=13$ TeV $pp$ collisions recorded with the ATLAS detector
Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron
Search for low-mass resonances decaying into two jets and produced in association with a photon using $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Search for charged Higgs bosons decaying via $H^{\pm} \to τ^{\pm}ν_τ$ in the $τ$+jets and $τ$+lepton final states with 36 fb$^{-1}$ of $pp$ collision data recorded at $\sqrt{s} = 13$ TeV with the ATLAS experiment
Search for invisible decays of the Higgs boson produced in association with a hadronically decaying vector boson in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
Search for the electroweak diboson production in association with a high-mass dijet system in semileptonic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for dark matter produced in association with a dark Higgs boson decaying into $W^{+}W^{-}$ in the one-lepton final state at $\sqrt{s}$=13 TeV using 139 fb$^{-1}$ of $pp$ collisions recorded with the ATLAS detector
本文利用ATLAS探测器139 fb$^{-1}$的13 TeV $pp$碰撞数据，搜寻与衰变为$W^{+}W^{-}$的暗Higgs玻色子协同产生的暗物质，未发现超出标准模型的异常，排除了质量在140至390 GeV的暗Higgs情景。
Search for anomalous electroweak production of $WW/WZ$ in association with a high-mass dijet system in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
本文研究了矢量玻色子散射中反常的四次规范玻色子耦合。用于分析的数据对应于$\sqrt{s}=8$ TeV $pp$碰撞的$20.2$ fb $^{-1}$，并于2012年由大型强子对撞机的ATLAS实验收集。搜索寻找$WW$或$WZ$玻色子对的产生伴随着一个高质量的双喷射系统，其中一个$W$轻子衰变，一个$W$或$Z$强子衰变。强子衰变$W/Z$重建为两个小半径射流或一个大半径射流使用射流子结构技术。通过拟合双玻色子系统的横向质量，对反常四次规范玻色子耦合参数$α_4$和$α_5$进行约束，得到的95%置信区间分别为$-0.024<α_4<0.030$和$-0.028<α_5<0.033$ .
Search for the production of a long-lived neutral particle decaying within the ATLAS hadronic calorimeter in association with a $Z$ boson from $pp$ collisions at $\sqrt{s} = 13$ TeV
Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons 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 boosted low-mass resonances decaying into hadrons produced in association with a photon in pp collisions at $\sqrt{s}=$13 TeV with the ATLAS detector
本研究利用ATLAS探测器140 fb⁻¹的13 TeV pp碰撞数据，通过初始态辐射光子触发并搜索与光子反冲的双分支子结构大半径喷注不变质量谱，寻找20-100 GeV低质量强子衰变共振态，结果与标准模型一致并设定Z'耦合上限。
Search for Higgs bosons produced in association with a high-energy photon via vector-boson fusion and decaying to a pair of $b$-quarks in the ATLAS detector
European Organisation for Nuclear Research (CERN)（欧洲核子研究组织（CERN））
