A new technique is discussed that can be applied to $Λ_b^0$ baryon decays where decays with one missing particle can be discerned from background and their branching fractions determined, along with other properties of the decays. Applications include measurements of the CKM elements $|V_{ub}|$ and $|V_{cb}|$, selected charmless decays, and detection of any exotic objects coupling to $b\to s$ decays, such as the inflaton.
Investigating vector-like leptons decaying into an electron and missing transverse energy in e$^{+}$ e$^{-}$ collisions with $\sqrt{s} = 500$ GeV at the ILC
Scrutinizing dark-matter scenarios with $B\to(K,K^*)\barνν$ decays
D. V. Skobeltsyn Institute of Nuclear Physics, M. V. Lomonosov Moscow State University（莫斯科国立大学德·V·斯科别尔琴核物理研究所）；Institute for High Energy Physics, Austrian Academy of Sciences（奥地利科学院高能物理研究所）；Marietta Blau Institute (MBI) for Particle Physics（玛丽亚·布劳粒子物理研究所）；Joint Institute for Nuclear Research（联合核研究所）；Faculty of Physics, University of Vienna（维也纳大学物理学院）
针对Belle-II观测到的B介子丢失能量衰变超出，研究提出通过同时分析$B\ o K$与$B\ o K^*$两类丢失能量衰变，在不依赖暗领域未知细节的前提下识别中介玻色子自旋等性质。
Two jets and missing $E_T$ signature to determine the spins of the new particles
我们考虑了LHC早期能量加喷流通道中新有色粒子的自旋决定。我们用一个三位驼鹿模型来描述所有相同自旋伙伴（LHT或UED类）模型的低能拉格朗日量，并检验振幅的规范不变性。与超对称模型相比，在基准产生和衰变通道$pp \rightarrow U^{(R)} U^{(R)} \rightarrow u u B_H B_H$中，存在自旋关联，它影响了重伙伴$U^{(R)}$衰变产生的夸克的极角和方位角分布.我们表明，这种影响将是可见的$E_{\rm T miss} / M_{\rm eff}$分布和重建的方位角相关使用MAOS重建。
Missing Mass Matters: Neutrinophilic Scalar in $D$-Meson Decays
School of Physics and Astronomy, Sun Yat-sen University（中山大学物理学院）；Guangdong Provincial Key Laboratory of Quantum Metrology and Sensing, Sun Yat-Sen University（中山大学广东省量子计量与传感重点实验室）
Search for supersymmetry with jets, missing transverse momentum and at least one hadronically decaying tau lepton in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS 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 the standard model Higgs boson decaying to a bb pair in events with one charged lepton and large missing transverse energy using the full CDF data set
Search for direct production of electroweakinos in final states with one lepton, missing transverse momentum and a Higgs boson decaying into two $b$-jets in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
本文给出了电弱伴子对产生$pp \rightarrow \tildeχ^\pm_1 \tildeχ^0_2$的研究结果，其中电荷伴子（$\tildeχ^\pm_1$）衰变为$W$玻色子和最轻的中性伴子（$\tildeχ^0_1$），而较重的中性伴子（$\tildeχ^0_2$）衰变为标准模型125 GeV的希格斯玻色子和第二个$\tildeχ^0_1$。信号的选择需要一对带有$b$标记的喷流，这些喷流与来自希格斯玻色子玻色子衰变的喷流一致，并且需要来自$W$玻色子衰变的电子或μ子，以及来自相应中微子和稳定中性伴子的缺失的横向动量。分析是基于相应的数据139 $\mathrm{fb}^{-1}$的$\sqrt{s}=13$ TeV $pp$碰撞提供的大型强子对撞机和记录的ATLAS探测器。没有统计学上的显着证据的事件超过标准模型expectations. Limits设置在简化模型中的直接生产的电弱子，假设纯维诺横截面。对于无质量的$\tildeχ^{0}_{1}$，在95%置信水平下排除高达740 GeV的$\tildeχ^{\pm}_{1}/\tildeχ^{0}_{2}$质量。
Studying of B_s^0-\bar{B}_s^0 mixing and B_{s}\to K^{(*)-}K^{(*)+} decays within supersymmetry
Recent results from CDF and DØ collaborations favor a large CP asymmetry in B_s^0- \bar{B}_s^0 mixing, while the standard model prediction is very small. Such a large phase may imply sizable new physics effects in B_s^0- \bar{B}_s^0 mixing. We compute the gluino-mediated supersymmetry contributions to B_s^0- \bar{B}_s^0 mixing, B_s->K^{(*)-}K^{(*)+} and B->X_sγdecays in the frame of the mass insertion approximation. Combining the constraints of \DeltaM_s , ΔΓ_s, ϕ^{J/ψϕ}_s, B(B_s->K^{-}K^{+}) and B(B->X_s γ), we find that the effects of the constrained LL and RR insertions in B_s->K^{(*)-}K^{(…
Search for displaced decays of long-lived particles in events with missing transverse momentum in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector
EUROPEAN ORGANISATION FOR NUCLEAR RESEARCH (CERN)（欧洲核子研究中心）
本文利用ATLAS探测器在13 TeV $pp$碰撞中寻找长寿命粒子的错位衰变，并通过四种模型解释结果。
Search for bottom-squark pair production in $pp$ collision events at $\sqrt{s} = 13$ TeV with hadronically decaying $τ$-leptons, $b$-jets and missing transverse momentum using the ATLAS detector
Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector
Search for single production of a vector-like T quark decaying to a top quark and a Z boson in the final state with jets and missing transverse momentum at $\sqrt{s} =$ 13 TeV
Search for new particles in events with a hadronically decaying W or Z boson and large missing transverse momentum at $\sqrt{s}$ = 13 TeV using the ATLAS detector
Search for cascade decays of charged sleptons and sneutrinos in final states with three leptons and missing transverse momentum in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Search for electroweak production of charginos and neutralinos at $\sqrt{s}$ = 13 TeV in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum
这封信提出了一个搜索的直接生产charginos和neutralinos通过电弱相互作用。结果是基于质子-质子碰撞的数据，在13 TeV的质心能量收集与CMS检测器在大型强子对撞机，对应于137 fb $^{-1}$的综合光度。搜索考虑最终状态与大失踪的横向动量和强子衰变玻色子WW，WZ和WH，其中H是希格斯玻色子对。这些玻色子是使用新的算法识别。相对于标准模型的预期，未观察到显著过量的事件。将95%置信水平的限值置于质量简并的维诺样超对称颗粒$\tildeχ_1^\pm$和$\tildeχ_2^0$以及质量简并的希格西诺样超对称颗粒$\tildeχ_1^\pm$、$\tildeχ_2^0$和$\tildeχ_3^0$的产生的横截面上。在接近无质量的最轻超对称粒子$\tildeχ_1^0$的极限中，质量高达870和960 GeV的类维诺粒子分别在$\tildeχ_2^0$ $\to$ Z $\tildeχ_1^0$和$\tildeχ_2^0$ $\to$ H $\tildeχ_1^0$的情况下被排除，而类希格西诺粒子在300和650 GeV之间被排除。
Search for a heavy resonance decaying into a Z and a Higgs boson in events with an energetic jet and two electrons, two muons, or missing transverse momentum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Measurement of the t anti-t Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96 TeV using Missing E(t) + jets Events with Secondary Vertex b-Tagging
Search for chargino--neutralino pair production in final states with three leptons and missing transverse momentum in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector
