Feebly-Interacting Particles:FIPs 2020 Workshop Report

Abstract

With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop "Physics Beyond Colliders meets theory", held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.

240 pages, 71 figures (version published on EPJC)

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• Illuminating Dark Photons with High-Energy Colliders
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• Sterile Neutrino Dark Matter
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• Broadband and Resonant Approaches to Axion Dark Matter Detection
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• Axions as Dark Matter Particles
• Cosmic Axion Spin Precession Experiment (CASPEr)
• FASER's Physics Reach for Long-Lived Particles
• The Phenomenology of Right Handed Neutrinos
• First results from a microwave cavity axion search at 24 micro-eV
• Results on light dark matter particles with a low-threshold CRESST-II detector
• STARlight: A Monte Carlo simulation program for ultra-peripheral collisions of relativistic ions
• Environmental Dependence of Masses and Coupling Constants
• How bright is the proton? A precise determination of the photon parton distribution function
• Search for Invisible Decays of a Dark Photon Produced in e+e- Collisions at BaBar
• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• Dark Matter, Baryogenesis and Neutrino Oscillations from Right Handed Neutrinos
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• Hunting All the Hidden Photons
• The ORGAN Experiment: An axion haloscope above 15 GHz
• Search for a new gauge boson in the $A^{\prime }$ Experiment (APEX)
• How to find neutral leptons of the nuMSM?
• Stellar cooling bounds on new light particles: plasma mixing effects
• Dark Matter Search Results from the Complete Exposure of the PICO-60 C${}_3$F${}_8$ Bubble Chamber
• Probing MeV to 90 GeV axion-like particles with LEP and LHC
• New stellar constraints on dark photons
• Serendipity in dark photon searches
• Flavor structures of charged fermions and massive neutrinos
• A Clockwork Axion
• Cosmological bounds on pseudo Nambu-Goldstone bosons
• Global constraints on heavy neutrino mixing
• New Limits on Hidden Photons from Past Electron Beam Dumps
• New Exclusion Limits on Dark Gauge Forces from Proton Bremsstrahlung in Beam-Dump Data
• Projected Sensitivity of the SuperCDMS SNOLAB experiment
• ALPs Effective Field Theory and Collider Signatures
• Search for invisible decays of a Higgs boson produced through vector boson fusion in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Minimal Flavour Seesaw Models
• Direct Detection Constraints on Dark Photon Dark Matter
• Revised constraints and Belle II sensitivity for visible and invisible axion-like particles
• Minimal Extension of the Standard Model Scalar Sector
• DarkSide-50 532-day Dark Matter Search with Low-Radioactivity Argon
• Physics with the KLOE-2 experiment at the upgraded DA$\varphi$NE
• First Results from ABRACADABRA-10 cm: A Search for Sub-$\mu$eV Axion Dark Matter
• Non-unitarity of the leptonic mixing matrix: Present bounds and future sensitivities
• Migdal Effect in Dark Matter Direct Detection Experiments
• Novel constraints on light elementary particles and extra-dimensional physics from the Casimir effect
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• A possible symmetry of the $\nu$MSM
• Strong Constraints on Sub-GeV Dark Matter from SLAC Beam Dump E137
• Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
• New Detectors to Explore the Lifetime Frontier
• Can dark matter induce cosmological evolution of the fundamental constants of Nature?
• Probing Light Thermal Dark-Matter With a Higgs Portal Mediator
• Search for ultralight scalar dark matter with atomic spectroscopy
• Search for Light Dark Matter Interactions Enhanced by the Migdal effect or Bremsstrahlung in XENON1T
• The Probable Fate of the Standard Model
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• Resonant detection of axion mediated forces with Nuclear Magnetic Resonance
• Constraints on Light Dark Matter Particles Interacting with Electrons from DAMIC at SNOLAB
• Searching for axion-like particles with ultra-peripheral heavy-ion collisions
• Searching for low-mass dark matter particles with a massive Ge bolometer operated above-ground
• Searching for dark matter and variation of fundamental constants with laser and maser interferometry
• Physics potential of the International Axion Observatory (IAXO)
• Pulsar timing signal from ultralight scalar dark matter
• Realizing the relaxion from multiple axions and its UV completion with high scale supersymmetry
• The Beam and detector of the NA62 experiment at CERN
• SENSEI: Direct-Detection Constraints on Sub-GeV Dark Matter from a Shallow Underground Run Using a Prototype Skipper-CCD
• Observing a light dark matter beam with neutrino experiments
• A taste of dark matter: Flavour constraints on pseudoscalar mediators
• New measurement of the K+ => pi+,nu,nubar branching ratio
• Searching for an oscillating massive scalar field as a dark matter candidate using atomic hyperfine frequency comparisons
• Dark Matter through the Axion Portal
• Constraints on neutrino masses from leptogenesis models
• The nuMSM, leptonic asymmetries, and properties of singlet fermions
• Dark Matter, Millicharges, Axion and Scalar Particles, Gauge Bosons, and Other New Physics with LDMX
• A review of the discovery reach of directional Dark Matter detection
• Evidence for light-by-light scattering and searches for axion-like particles in ultraperipheral PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Improved axion emissivity from a supernova via nucleon-nucleon bremsstrahlung
• Precision Metrology Meets Cosmology: Improved Constraints on Ultralight Dark Matter from Atom-Cavity Frequency Comparisons
• Improved constraints on non-Newtonian forces at 10 microns
• Search for light massive gauge bosons as an explanation of the $(g-2{)}_{\mu }$ anomaly at MAMI
• New Exclusion Limits for Dark Gauge Forces from Beam-Dump Data
• Axion Kinetic Misalignment Mechanism
• Protophobic Fifth Force Interpretation of the Observed Anomaly in ${}^8$Be Nuclear Transitions
• ALPtraum: ALP production in proton beam dump experiments
• Non-Unitarity, sterile neutrinos, and Non-Standard neutrino Interactions
• New Exclusion Limits for the Search of Scalar and Pseudoscalar Axion-Like Particles from "Light Shining Through a Wall"
• Dark matter search in missing energy events with NA64
• Axion Dark Matter Detection using an LC Circuit
• Observing light-by-light scattering at the Large Hadron Collider
• A Radio for Hidden-Photon Dark Matter Detection
• Strong Constraints on Fuzzy Dark Matter from Ultrafaint Dwarf Galaxy Eridanus II
• Decay and Detection of a Light Scalar Boson Mixing with the Higgs
• Kinetic Mixing as the Origin of Light Dark Scales
• Search for dark photons produced in 13 TeV $pp$ collisions
• Constraining Light Dark Matter with Low-Energy e+e- Colliders
• Millicharged Atomic Dark Matter
• First germanium-based constraints on sub-MeV Dark Matter with the EDELWEISS experiment
• Early-Universe Constraints on Dark Matter-Baryon Scattering and their Implications for a Global 21cm Signal
• Dark Sectors at the Fermilab SeaQuest Experiment
• Accelerating the Discovery of Light Dark Matter
• Neutrinoless Double Beta Decay and Heavy Sterile Neutrinos
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• Search for Scalar Diphoton Resonances in the Mass Range $65-600$ GeV with the ATLAS Detector in $pp$ Collision Data at $\sqrt{s}$ = 8 $TeV$
• Natural inflation with multiple sub-Planckian axions
• Axion Dark Matter Search around 6.7 $\mu$eV
• Axion and hidden photon dark matter detection with multilayer optical haloscopes
• LHC probes the hidden sector
• Constraints on sub-GeV hidden sector gauge bosons from a search for heavy neutrino decays
• The PVLAS experiment: measuring vacuum magnetic birefringence and dichroism with a birefringent Fabry-Perot cavity
• Limit on the production of a light vector gauge boson in phi meson decays with the KLOE detector
• Cool WISPs for stellar cooling excesses
• Heavy Majorana Neutrinos in the Effective Lagrangian Description: Application to Hadron Colliders
• Axion and neutrino bounds improved with new calibrations of the tip of the red-giant branch using geometric distance determinations
• Axion-Like Particles at Future Colliders
• Axion-induced effects in atoms, molecules and nuclei: Parity nonconservation, anapole moments, electric dipole moments, and spin-gravity and spin-axion momentum couplings
• Muon g-2, Rare Kaon Decays, and Parity Violation from Dark Bosons
• Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Violation of the equivalence principle from light scalar dark matter
• Neutrinoless double beta decay versus other probes of heavy sterile neutrinos
• Inclusive Dark Photon Search at LHCb
• Galactic axions search with a superconducting resonant cavity
• Stellar Recipes for Axion Hunters
• Search for $K_L\to {\pi }^0\nu \overline{\nu }$ and $K_L\to {\pi }^0{X}^0$ Decays at the J-PARC KOTO Experiment
• Constraints on low-mass, relic dark matter candidates from a surface-operated SuperCDMS single-charge sensitive detector
• Revisiting the axion bounds from the Galactic white dwarf luminosity function
• Helioscope Bounds on Hidden Sector Photons
• Search for light scalar dark matter with atomic gravitational wave detectors
• Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB
• New Electron Beam-Dump Experiments to Search for MeV to few-GeV Dark Matter
• Dipole portal to heavy neutral leptons
• A New Flavor of Searches for Axion-Like Particles
• The Short-Baseline Neutrino Program at Fermilab
• Tighter Limits on Dark Matter Explanations of the Anomalous EDGES 21cm Signal
• Solar axion flux from the axion-electron coupling
• Contributions of axion-like particles to lepton dipole moments
• Search for axionlike dark matter with a liquid-state nuclear spin comagnetometer
• Results of a Search for Sub-GeV Dark Matter Using 2013 LUX Data
• Axion search with a quantum-limited ferromagnetic haloscope
• BBN And The CMB Constrain Neutrino Coupled Light WIMPs
• Piezoelectrically Tuned Multimode Cavity Search for Axion Dark Matter
• Search for hidden-sector bosons in $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Anomalous solutions to the strong CP problem
• Light shining through walls
• The MiniBooNE Detector
• First results from the NEWS-G direct dark matter search experiment at the LSM
• Searching for galactic axions through magnetized media: the QUAX proposal
• Global Constraints on a Heavy Neutrino
• Dark photons from charm mesons at LHCb
• Results from the Super Cryogenic Dark Matter Search (SuperCDMS) experiment at Soudan
• Search for a vector gauge boson in phi meson decays with the KLOE detector
• New Physics in the Rayleigh-Jeans Tail of the CMB
• Coupling QCD-scale axion-like particles to gluons
• Solar neutrino limit on axions and keV-mass bosons
• Matrix element analyses of dark matter scattering and annihilation
• Search for invisible axion dark matter of mass m${}_a=43\mu$eV with the QUAX--$a\gamma$ experiment
• Search for new phenomena in high-mass diphoton final states using 37 fb${}^{-1}$ of proton-proton collisions collected at $\sqrt{s}=13$ TeV with the ATLAS detector
• Axion Dark Matter Detection with Cold Molecules
• First Axion Results from the XENON100 Experiment
• Multi-lepton Signatures of a Hidden Sector in Rare B Decays
• A Proposal to Detect Dark Matter Using Axionic Topological Antiferromagnets
• Reviving Millicharged Dark Matter for 21-cm Cosmology
• The photo-philic QCD axion
• First results of the CERN Resonant WISP Search (CROWS)
• New axion and hidden photon constraints from a solar data global fit
• Search for long-lived scalar particles in $B^{+}\to K^{+}\chi ({\mu }^{+}{\mu }^{-})$ decays
• Factoring the Strong CP Problem
• The HAYSTAC Axion Search Analysis Procedure
• Lyman-$\alpha$ forest and non-linear structure characterization in Fuzzy Dark Matter cosmologies
• Enhanced effects of variation of the fundamental constants in laser interferometers and application to dark matter detection
• Right-handed neutrino magnetic moments
• Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg $\times$ day Data of the CDEX-10 Experiment
• Discovering Inelastic Thermal-Relic Dark Matter at Colliders
• Search for heavy neutral leptons in decays of $W$ bosons produced in 13 TeV $pp$ collisions using prompt and displaced signatures with the ATLAS detector
• A Model of Visible QCD Axion
• Axion cooling of neutron stars
• Constraints on Spin-Independent Nucleus Scattering with sub-GeV Weakly Interacting Massive Particle Dark Matter from the CDEX-1B Experiment at the China Jin-Ping Laboratory
• First Searches for Axions and Axion-Like Particles with the LUX Experiment
• Neutral Naturalness from the Orbifold Higgs
• Search for Majorana neutrinos in $B^{-}\to {\pi }^{+}{\mu }^{-}{\mu }^{-}$ decays
• Inelastic Dark Matter at the LHC Lifetime Frontier: ATLAS, CMS, LHCb, CODEX-b, FASER, and MATHUSLA
• Search for a Dark Matter-Induced Annual Modulation Signal in NaI(Tl) with the COSINE-100 Experiment
• New experimental limits on non-Newtonian forces in the micrometer-range
• On dark matter models with uniquely spin-dependent detection possibilities
• Diamond Detectors for Direct Detection of Sub-GeV Dark Matter
• BBN And The CMB Constrain Light, Electromagnetically Coupled WIMPs
• Cosmological Constraints on Very Dark Photons
• Production of the Smallest QED Atom: True Muonium (mu^+ mu^-)
• Combination of searches for Higgs boson pair production in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• The High Quality QCD Axion and the LHC
• Photoproduction of axion-like particles
• See-Saw Energy Scale and the LSND Anomaly
• Constraints on bosonic dark matter from ultralow-field nuclear magnetic resonance
• ADMX SLIC: Results from a Superconducting LC Circuit Investigating Cold Axions
• Leptogenesis from a GeV Seesaw without Mass Degeneracy
• Search for heavy neutrinos at Belle
• Topological Susceptibility and QCD Axion Mass: QED and NNLO corrections
• Search for Axionlike and Scalar Particles with the NA64 Experiment
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Millicharged particles in neutrino experiments
• Search for Low-Mass Dark Matter with CDMSlite Using a Profile Likelihood Fit
• Neutrino Portals to Dark Matter
• Robust cosmological constraints on axion-like particles
• M${}^3$: A New Muon Missing Momentum Experiment to Probe $(g-2{)}_{\mu }$ and Dark Matter at Fermilab
• Combination of searches for Higgs boson pairs in $pp$ collisions at $\sqrt{s}=$13 TeV with the ATLAS detector
• The Fermi Large Area Telescope as a Galactic Supernovae Axionscope
• Improved limits on a hypothetical X(16.7) boson and a dark photon decaying into $e^{+}{e}^{-}$ pairs
• Novel signatures of dark matter in laser-interferometric gravitational-wave detectors
• SIMPs through the axion portal
• Solving the Hierarchy Problem Discretely
• Limits on Axion Couplings from the first 80-day data of PandaX-II Experiment
• New LHC bound on low-mass diphoton resonances
• ALPs at FASER: The LHC as a Photon Beam Dump
• Supernova Bounds on the Dark Photon Using its Electromagnetic Decay
• Measurement of isolated-photon pair production in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• A Search for Dark Matter Axions with the Orpheus Experiment
• Search for new phenomena in events with at least three photons collected in $pp$ collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Constraining the Axion-Photon Coupling with Massive Stars
• Search for Axions with the CDMS Experiment
• Testable Baryogenesis in Seesaw Models
• Color Unifed Dynamical Axion
• The SABRE project and the SABRE PoP
• First results on dark matter annual modulation from ANAIS-112 experiment
• Opening up the QCD axion window
• An experiment to search for dark matter interactions using sodium iodide detectors
• Search for light vector boson production in $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}\gamma$ interactions with the KLOE experiment
• The Subhalo Mass Function and Ultralight Bosonic Dark Matter
• Axion Dark Matter Detection using Atomic Transitions
• Search for a standard model-like Higgs boson in the mass range between 70 and 110 GeV in the diphoton final state in proton-proton collisions at $\sqrt{s}=$ 8 and 13 TeV
• Axion searches with the EDELWEISS-II experiment
• Limit on the Axion Decay Constant from the Cooling Neutron Star in Cassiopeia A
• Baryogenesis and Dark Matter from $B$ Mesons
• A Visible QCD Axion from an Enlarged Color Group
• Small neutrino masses from gravitational $\theta$-term
• BBN for the LHC: constraints on lifetimes of the Higgs portal scalars
• Flavor constraints on electroweak ALP couplings
• Enhanced Supernova Axion Emission and its Implications
• Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab
• Looking for milli-charged particles with a new experiment at the LHC
• Design and Operational Experience of a Microwave Cavity Axion Detector for the 20-100 micro-eV Range
• New Bounds for Axions and Axion-Like Particles with keV-GeV Masses
• Limit on the production of a new vector boson in ${\mathrm{e}}^{+}{\mathrm{e}}^{-}\to \mathrm{U}\gamma$, U$\to {\pi }^{+}{\pi }^{-}$ with the KLOE experiment
• A New Measurement of the ${\pi }^0$ Radiative Decay Width
• Dark Matter Search in a Proton Beam Dump with MiniBooNE
• Search for heavy neutrinos with the T2K near detector ND280
• The Initial Helium Abundance of the Galactic Globular Cluster System
• Results on Low-Mass Weakly Interacting Massive Particles from an 11 kg-day Target Exposure of DAMIC at SNOLAB
• Axion Searches with Microwave Filters: the RADES project
• Search for heavy neutrinos in $K^{+}\to {\mu }^{+}{\nu }_H$ decays
• Neutrino Lines from Majoron Dark Matter
• First Direct-Detection Constraints on eV-Scale Hidden-Photon Dark Matter with DAMIC at SNOLAB
• Naturalness, Vacuum Stability and Leptogenesis in the Minimal Seesaw Model
• Testing the low scale seesaw and leptogenesis
• The seesaw portal in testable models of neutrino masses
• Limits on the Mixing of Tau Neutrino to Heavy Neutrinos
• Search for Axion-Like Particles produced in $e^{+}{e}^{-}$ collisions at Belle II
• Heavy Neutrinos in displaced vertex searches at the LHC and HL-LHC
• Search for signatures of extra dimensions in the diphoton mass spectrum at the Large Hadron Collider
• Testing GeV-Scale Dark Matter with Fixed-Target Missing Momentum Experiments
• Constraints on Axion-like Particles and Nucleon Pairing in Dense Matter from the Hot Neutron Star in HESS J1731-347
• Experimental bounds on sterile neutrino mixing angles
• Improved Search for Heavy Neutrinos in the Decay $\pi \to e\nu$
• Keung-Senjanović process at LHC: from LNV to displaced vertices to invisible decays
• The COSINUS project - perspectives of a NaI scintillating calorimeter for dark matter search
• Aligned Natural Inflation: Monodromies of two Axions
• Light new physics in coherent neutrino-nucleus scattering experiments
• Search for a narrow resonance lighter than 200 GeV decaying to a pair of muons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Expression of Interest for the CODEX-b Detector
• Searches for Decays of New Particles in the DUNE Multi-Purpose Near Detector
• Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Sterile neutrino searches via displaced vertices at LHCb
• Allen: A high level trigger on GPUs for LHCb
• It's all right(-handed neutrinos): a new $W^{\prime }$ model for the $R_{D^{(\ast )}}$ anomaly
• Readout technologies for directional WIMP Dark Matter detection
• Thermal Dark Matter Below an MeV
• Sub-eV scalar dark matter through the super-renormalizable Higgs portal
• Non-Resonant Searches for Axion-Like Particles at the LHC
• Heavy Neutral Leptons from low-scale seesaws at the DUNE Near Detector
• Heavy axion-like particles and core-collapse supernovae: constraints and impact on the explosion mechanism
• A Path to the Direct Detection of sub-GeV Dark Matter Using Calorimetric Readout of a Superfluid ${}^4$He Target
• Can heavy neutrinos dominate neutrinoless double beta decay?
• Leptogenesis and Neutrino Oscillations in the Classically Conformal Standard Model with the Higgs Portal
• Heavy Neutrinos with Dynamic Jet Vetoes: Multilepton Searches at $\sqrt{s}=14,27,$ and $100$ TeV
• Multi-Photon Production in e+e- collisions at sqrt(s) = 181 - 209 GeV
• Future Directions in the Microwave Cavity Search for Dark Matter Axions
• Seesaw roadmap to neutrino mass and dark matter
• White Paper on New Opportunities at the Next-Generation Neutrino Experiments (Part 1: BSM Neutrino Physics and Dark Matter)
• XENON1T excess from anomaly-free ALP dark matter and its implications for stellar cooling anomaly
• Solar axions cannot explain the XENON1T excess
• Experimental Targets for Photon Couplings of the QCD Axion
• Search for heavy neutral lepton production in $K^{+}$ decays
• Light scalars in composite Higgs models
• An Extended Analysis of Heavy Neutral Leptons during Big Bang Nucleosynthesis
• Search for a light pseudoscalar Higgs boson in the dimuon decay channel in pp collisions at sqrt(s) = 7 TeV
• Probing Leptogenesis
• Searching for Confining Hidden Valleys at the LHC(b)
• Probing Leptogenesis at Future Colliders
• Improved limits on interactions of low-mass spin-0 dark matter from atomic clock spectroscopy
• Bounds on axion-like particles from the diffuse supernova flux
• Increasing Neff with particles in thermal equilibrium with neutrinos
• Search for MeV dark photons in a light-shining-through-walls experiment at CERN
• Search for heavy neutral lepton production in $K^{+}$ decays to positrons
• Dark photon production through positron annihilation in beam-dump experiments
• A frequentist analysis of three right-handed neutrinos with GAMBIT
• Pions in hot dense matter and their astrophysical implications
• Probing dark sectors with long-lived particles at BELLE II
• Broadening Frequency Range of a Ferromagnetic Axion Haloscope with Strongly Coupled Cavity-Magnon Polaritons
• Resonant enhancement in leptogenesis
• Constraints on the coupling with photons of heavy axion-like-particles from Globular Clusters
• Search for Solar Axions Produced in $p(d,{}^3\mathrm{He})\mathrm{A}$ Reaction with Borexino Detector
• Squeezed vacuum used to accelerate the search for a weak classical signal
• Addressing the Majorana vs. Dirac Question with Neutrino Decays
• Search for long-lived particles produced in $pp$ collisions at $\sqrt{s}=13$ TeV that decay into displaced hadronic jets in the ATLAS muon spectrometer
• Search for solar axions in XMASS, a large liquid-xenon detector
• Lepton flavor violation with light vector bosons
• Concept of multiple-cell cavity for axion dark matter search
• NA62 sensitivity to heavy neutral leptons in the low scale seesaw model
• Directional Detection of Dark Matter using Spectroscopy of Crystal Defects
• Proton Fixed-Target Scintillation Experiment to Search for Minicharged Particles
• 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
• R-axion at colliders
• Light Scalars and the KOTO Anomaly
• Observable signatures of dark photons from supernovae
• Search for exclusive or semi-exclusive photon pair production and observation of exclusive and semi-exclusive electron pair production in pp collisions at sqrt(s) = 7 TeV
• Searching for axion-like particles with proton tagging at the LHC
• Axion mass limit from observations of the neutron star in Cassiopeia A
• Exotic decays of the 125 GeV Higgs boson at future $e^{+}{e}^{-}$ lepton colliders
• Search for Production of Invisible Final States in Single-Photon Decays of Upsilon(1S)
• Search for millicharged particles in reactor neutrino experiments: a probe of the PVLAS anomaly
• Quasi-Dirac neutrinos at the LHC
• Search for fractionally charged particles in pp collisions at sqrt(s) = 7 TeV
• Search for Electronic Recoil Event Rate Modulation with 4 Years of XENON100 Data
• Cosmological abundance of the QCD axion coupled to hidden photons
• Search for production of an invisible dark photon in ${\pi }^0$ decays
• Leveraging the ALICE/L3 cavern for long-lived exotics
• First search for $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ using the decay-in-flight technique
• Revisiting cosmological bounds on sterile neutrinos
• Benchmarks for Double Higgs Production in the Singlet Extended Standard Model at the LHC
• Axion cooling of neutron stars. II. Beyond hadronic axions
• New constraint from supernova explosions on light particles beyond the Standard Model
• Leptogenesis: beyond the minimal type I seesaw scenario
• Broadening the Higgs Boson with Right-Handed Neutrinos and a Higher Dimension Operator at the Electroweak Scale
• The RGB tip of galactic globular clusters and the revision of the bound of the axion-electron coupling
• Model-independent bounds on light pseudoscalars from rare B-meson decays
• Probing the Majorana neutrinos and their CP violation in decays of charged scalar mesons $\pi ,K,D,D_s,B,B_c$
• Constraints on the Coupling between Axionlike Dark Matter and Photons Using an Antiproton Superconducting Tuned Detection Circuit in a Cryogenic Penning Trap
• MeV-scale sterile neutrino decays at the Fermilab Short-Baseline Neutrino program
• Low-scale leptogenesis with three heavy neutrinos
• Low Threshold Results and Limits from the DRIFT Directional Dark Matter Detector
• Resonant production of dark photons in positron beam dump experiments
• Improved EDELWEISS-III sensitivity for low-mass WIMPs using a profile likelihood approach
• Hierarchical Axion Inflation
• $N_{\mathrm{eff}}$ in low-scale seesaw models versus the lightest neutrino mass
• Direct limits on the interaction of antiprotons with axion-like dark matter
• A Thermal Neutrino Portal to Sub-MeV Dark Matter
• Search for millicharged particles in proton-proton collisions at $\sqrt{s}=13$ TeV
• The exact tree-level calculation of the dark photon production in high-energy electron scattering at the CERN SPS
• Projections for Dark Photon Searches at Mu3e
• The meV mass frontier of axion physics
• Search for long-lived neutral particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter
• Electroweak naturalness in three-flavour Type I see-saw and implications for leptogenesis
• Search for extra dimensions using diphoton events in 7 TeV proton-proton collisions with the ATLAS detector
• Exotic Higgs Decays and the Electroweak Phase Transition
• The Majoron at two loops
• Constraining the neutrino magnetic dipole moment from white dwarf pulsations
• Milli-Charged Dark Matter in Quantum Gravity and String Theory
• Why is there more matter than antimatter? Calculational methods for leptogenesis and electroweak baryogenesis
• Probing the Relaxed Relaxion at the Luminosity and Precision Frontiers
• Revisiting supernova constraints on a light CP-even scalar
• Updated search for long-lived particles decaying to jet pairs
• Measurement of the beam asymmetry $\Sigma$ for ${\pi }^0$ and $\eta$ photoproduction on the proton at $E_{\gamma }=9$ GeV
• Search for Light Weakly-Interacting-Massive-Particle Dark Matter by Annual Modulation Analysis with a Point-Contact Germanium Detector at the China Jinping Underground Laboratory
• New physics searches with heavy-ion collisions at the LHC
• Study of the $K_L\to {\pi }^0\nu \overline{\nu }$ Decay at the J-PARC KOTO Experiment
• A search for pair production of new light bosons decaying into muons in proton-proton collisions at 13 TeV
• A Composite Higgs with a Heavy Composite Axion
• Combined search for light dark matter with electron and muon beams at NA64
• Extending the reach of FASER, MATHUSLA, and SHiP towards smaller lifetimes using secondary particle production
• Cosmological beam dump: constraints on dark scalars mixed with the Higgs boson
• Final Results from the KTeV Experiment on the Decay KL -> pi0 gamma gamma
• Loophole in K --> pi nu nubar Search and New Weak Leptonic Forces
• Distinguishing Dirac/Majorana Sterile Neutrinos at the LHC
• Seesaw Dirac neutrino mass through dimension-6 operators
• CYGNUS: Feasibility of a nuclear recoil observatory with directional sensitivity to dark matter and neutrinos
• Axions from cooling compact stars: pair-breaking processes
• A Flavorful Factoring of the Strong CP Problem
• Missing energy signature from invisible decays of dark photons at the CERN SPS
• Dark Photon Search in the Mass Range Between 1.5 and 3.4 GeV/$c^2$
• Neutrino Masses and Mixings from String Theory Instantons
• Revisiting longitudinal plasmon-axion conversion in external magnetic fields
• Search for heavy neutral leptons decaying into muon-pion pairs in the MicroBooNE detector
• On Lepton Number Violation in Heavy Neutrino Decays at Colliders
• Collider constraints on light pseudoscalars
• Oscillation of heavy sterile neutrino in decay of $B\to \mu e\pi$
• Neutrinoless double $\beta$ decay and low scale leptogenesis
• Probing heavy neutrino oscillations in rare W boson decays
• 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
• Constraints on long-lived light scalars with flavor-changing couplings and the KOTO anomaly
• Neutrino Masses from a Dark Neutrino Sector below the Electroweak Scale
• Constraints on axionlike dark matter with masses down to $10^{-23}$ eV/c${}^2$
• Search for a light pseudoscalar Higgs boson in the boosted $\mu \mu \tau \tau$ final state in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• CP Violation in the Lepton Sector and Implications for Leptogenesis
• Constraints on Axion-like Particles from a Hard $X$-ray Observation of Betelgeuse
• Search for a Dark Photon in Electro-Produced $e^{+}{e}^{-}$ Pairs with the Heavy Photon Search Experiment at JLab
• Search for long-lived particles in final states with displaced dimuon vertices in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• 750 GeV diphoton resonance in a visible heavy QCD axion model
• First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as $e$/1000 with the \textsc{Majorana Demonstrator}
• Search for solar axions produced by Compton process and bremsstrahlung using axioelectric effect
• Sensitivity of EDM experiments in paramagnetic atoms and molecules to hadronic CP violation
• Search for Higgs boson decays into two new low-mass spin-0 particles in the 4$b$ channel with the ATLAS detector using $pp$ collisions at $\sqrt{s}=13$ TeV
• The Heavy Photon Search experiment at Jefferson Laboratory
• Search for an invisibly decaying $Z^{\prime }$ boson at Belle II in $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}(e^{\pm }{\mu }^{\mp })$ plus missing energy final states
• A Photon Regeneration Experiment for Axionlike Particle Search using X-rays
• Search for long-lived neutral particles produced in $pp$ collisions at $\sqrt{s}=13$ TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer
• Millicharged Particles in Liquid Argon Neutrino Experiments
• The seesaw path to leptonic CP violation
• Constraints on the axion-electron coupling for solar axions produced by Compton process and bremsstrahlung
• Revision of the LHCb Limit on Majorana Neutrinos
• The Impact of Neutrino Magnetic Moments on the Evolution of Massive Stars
• Axion dark matter search using the storage ring EDM method
• Hidden Photon Dark Matter in the Light of XENON1T and Stellar Cooling
• Search for annual and diurnal rate modulations in the LUX experiment
• Strong CP problem with low-energy emergent QCD: The 4321 case
• Dark Sector Equilibration During Nucleosynthesis
• Lepton Flavor Violation with Displaced Vertices
• Combined limit on the production of a light gauge boson decaying into ${\mu }^{+}{\mu }^{-}$ and ${\pi }^{+}{\pi }^{-}$
• Mirror World, Supersymmetric Axion and Gamma Ray Bursts
• Paleo-detectors: Searching for Dark Matter with Ancient Minerals
• First Demonstration of a Scintillating Xenon Bubble Chamber for Detecting Dark Matter and Coherent Elastic Neutrino-Nucleus Scattering
• New Solutions to the Strong CP Problem
• The Neutrino Option
• Search for light long-lived neutral particles produced in $pp$ collisions at $\sqrt{s}=$ 13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector
• Sterile neutrino dark matter via coinciding resonances
• Axions and the luminosity function of white dwarfs. The thin and thick disks, and the halo
• Search for Large Extra Dimensions in the Diphoton Final State at the Large Hadron Collider
• On sub-GeV Dark Matter Production at Fixed-Target Experiments
• Search for the decay K+ to pi+ gamma gamma in the pi+ momentum region P>213 MeV/c
• Limits on the neutrino magnetic dipole moment from the luminosity function of hot white dwarfs
• Laser induced fluorescence for axion dark matter detection: a feasibility study in YLiF${}_4$:Er${}^{3+}$
• Selective enhancement of the QCD axion couplings
• Searching for a Sterile Neutrino in Tau Decays at B-factories
• Search for Solar Axions Produced by Primakoff Conversion Using Resonant Absorption by ${}^{169}$Tm Nuclei
• An investigation of the very rare $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ decay
• Direct Search for Right-handed Neutrinos and Neutrinoless Double Beta Decay
• Discovery potential for directional Dark Matter detection with nuclear emulsions
• Axions and Axion-Like Particles
• High-dimensional neutrino masses
• Nearly degenerate heavy sterile neutrinos in cascade decay: mixing and oscillations
• Measurement of the directional sensitivity of DMTPC detectors
• Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8
• First results on sub-GeV spin-dependent dark matter interactions with ${}^7$Li
• Search for Heavy Neutrinos in $K^{+}\to {\mu }^{+}{\nu }_{\mu }$ Decays
• The Electroweak Vacuum Angle
• Extending LHC Coverage to Light Pseudoscalar Mediators and Coy Dark Sectors
• First axion dark matter search with toroidal geometry
• Upper Limit on the Branching Ratio for the Decay ${\pi }^0\to \nu \bar{\nu }$
• Searches for low-mass dimuon resonances
• Search for the lepton flavour violating decay $B^{+}\to K^{+}{\mu }^{-}{\tau }^{+}$ using $B_{s2}^{\ast 0}$ decays
• QCD $\theta$-vacuum energy and axion properties
• Production of axion-like particles from photon conversions in large-scale solar magnetic fields
• The DarkLight Experiment: A Precision Search for New Physics at Low Energies
• Design and construction of the MicroBooNE Cosmic Ray Tagger system
• Search for dark sector physics with NA64
• Probing the Fundamental Nature of Dark Matter with the Large Synoptic Survey Telescope
• Search for sub-GeV dark matter by annual modulation using XMASS-I detector
• Search for hadronic axions using axioelectric effect
• Discovering the Twin Higgs Boson with Displaced Decays
• Discovering True Muonium at LHCb
• Dirac vs. Majorana HNLs (and their oscillations) at SHiP
• Background assessment for the TREX Dark Matter experiment
• Probing the Dirac or Majorana nature of the Heavy Neutrinos in pure leptonic decays at the LHC
• Hard X-ray Excess from the Magnificent Seven Neutron Stars
• Searching for new spin-0 resonances at LHCb
• Light-by-light scattering in ultra-peripheral heavy-ion collisions at low diphoton masses
• Noise characterization for resonantly-enhanced polarimetric vacuum magnetic-birefringence experiments
• Search for Higgs boson decays into a $Z$ boson and a light hadronically decaying resonance using 13 TeV $pp$ collision data from the ATLAS detector
• Theoretical Estimate of the Sensitivity of the CUORE Detector to Solar Axions
• Axion global fits with Peccei-Quinn symmetry breaking before inflation using GAMBIT
• Measurement of $\mathcal{B}(J/\psi \to {\eta }^{\prime }{e}^{+}{e}^{-}$) and search for a dark photon
• An improved analysis framework for axion dark matter searches
• Search for the Decay J/psi -> gamma + invisible
• Search for heavy neutrino in $K^{+}\to {\mu }^{+}{\nu }_H$ decay
• The initial mass-final luminosity relation of type II supernova progenitors. Hints of new physics?
• MeV-scale Seesaw and Leptogenesis
• First direct limits on Lightly Ionizing Particles with electric charge less than $e/6$
• Testing $\nu$MSM with indirect searches
• A Systematic Study of Hidden Sector Dark Matter: Application to the Gamma-Ray and Antiproton Excesses
• First Search for Exotic Z Boson Decays into Photons and Neutral Pions in Hadron Collisions
• Probing new physics with displaced vertices: muon tracker at CMS
• Search for a low-mass ${\tau }^{-}{\tau }^{+}$ resonance in association with a bottom quark in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for dark photons in decays of Higgs bosons produced in association with Z bosons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for a dimuon resonance in the ${\rm Y}$ mass region
• Dynamical axion misalignment with small instantons
• 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
• Natural Milli-Charged Inflation
• Search for resonances in the mass spectrum of muon pairs produced in association with b quark jets in proton-proton collisions at $\sqrt{s}=$ 8 and 13 TeV
• Leptogenesis from oscillations and dark matter
• Search for Heavy Neutrino in K->mu nu_h(nu_h-> nu gamma) Decay at ISTRA+ Setup
• Predictive Leptogenesis from Minimal Lepton Flavour Violation
• Graphene-based detectors for directional dark matter detection
• Search for the decay $J/\psi \to \gamma +\mathrm{invisible}$
• Exploring 0.1-10eV axions with a new helioscope concept
• Solar Axion Search Technique with Correlated Signals from Multiple Detectors
• Leptogenesis due to oscillating Higgs field
• The MATHUSLA Test Stand
• Search for lepton-flavour-violating decays of Higgs-like bosons
• Exploring the lifetime and cosmic frontier with the MATHUSLA detector
• Implications of last NA64 results and the electron $g_e-2$ anomaly for the X(16.7) boson survival
• Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Υ(1S)
• White Dwarfs as Advanced Physics Laboratories. The Axion case
• Real-time discrimination of photon pairs using machine learning at the LHC
• Search for intermediate resonances and dark gauge bosons in $J/\psi \to \gamma {\pi }^0{\eta }^{\prime }$

Cited by in corpus (85)

• Toward the discovery of matter creation with neutrinoless double-beta decay
• The Present and Future Status of Heavy Neutral Leptons
• New anomaly observed in ${}^{12}$C supports the existence and the vector character of the hypothetical X17 boson
• FACET: A new long-lived particle detector in the very forward region of the CMS experiment
• Mapping the viable parameter space for testable leptogenesis
• Searches for Long-Lived Particles at the Future FCC-ee
• Unveiling Hidden Physics at the LHC
• Stellar Evolution confronts Axion Models
• 3D template-based $Fermi$-LAT constraints on the diffuse supernova axion-like particle background
• Constraints on light decaying dark matter candidates from 16 years of INTEGRAL/SPI observations
• ALPINIST: Axion-Like Particles In Numerous Interactions Simulated and Tabulated
• Axion Couplings in Grand Unified Theories
• Search for heavy neutral leptons in decays of $W$ bosons using a dilepton displaced vertex in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Nonresonant Searches for Axion-Like Particles in Vector Boson Scattering Processes at the LHC
• Improved stellar limits on a light CP-even scalar
• Displaced or invisible? ALPs from $B$ decays at Belle II
• Probing the axion-nucleon coupling with the next generation of axion helioscopes
• Supernova bounds on axion-like particles coupled with nucleons and electrons
• ACHILLES: A novel event generator for electron- and neutrino-nucleus scattering
• Two dark matter candidates: the case of inert doublet and singlet scalars
• Axion-like Particle Searches at DarkQuest
• Challenges for heavy QCD axion inflation
• Electroweak ALP Searches at a Muon Collider
• Opportunities for new physics searches with heavy ions at colliders
• On the origin of matter in the Universe
• Scale Invariant FIMP Miracle
• Neutron star observations of pseudoscalar-mediated dark matter
• Massive sterile neutrinos in the early universe: From thermal decoupling to cosmological constraints
• Gauge hierarchy from electroweak vacuum metastability
• Axions in String Theory $-$ Slaying the Hydra of Dark Radiation
• Probing Relativistic Axions from Transient Astrophysical Sources
• Kinetic Mixing, Dark Higgs Triplets, $M_W$ and All That
• Constraining heavy axion-like particles by energy deposition in Globular Cluster stars
• Measuring the Inflaton Coupling in the CMB
• New Benchmark Models for Heavy Neutral Lepton Searches
• Science Case for the new High-Intensity Muon Beams HIMB at PSI
• Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos
• Measuring the electron Yukawa coupling via resonant s-channel Higgs production at FCC-ee
• Dark matter detectors as a novel probe for light new physics
• Cosmological Relaxation through the Dark Axion Portal
• Molecular Chemistry for Dark Matter III: DarkKROME
• Neutrino millicharge and other electromagnetic interactions with COHERENT-2021 data
• ALP Searches at the LHC: FASER as a Light Shining through Walls Experiment
• Probing high-energy solar axion flux with a large scintillation neutrino detector
• Near or Far Detectors? Optimizing Long-Lived Particle Searches at Electron-Positron Colliders
• Axion Quality Problem Alleviated by Non-Minimal Coupling to Gravity
• Dark sectors in neutron-shining-through-a-wall and nuclear absorption signals
• Probing HNL-ALP couplings at colliders
• Dark Moments for the Standard Model ?
• Leptonic Meson Decays into Invisible ALP
• Sensitivity of the FACET experiment to Heavy Neutral Leptons and Dark Scalars
• Heavy Neutral Leptons -- Advancing into the PeV domain
• Lepton Phenomenology of Stueckelberg Portal to Dark Sector
• Double-Hit Signature of Millicharged Particles in 3D segmented neutrino detector
• All-optical Quantum Vacuum Signals in Two-Beam Collision
• Betelgeuse Constraints on Coupling between Axion-like Particles and Electrons
• New bounds on axion-like particles from MicroBooNE
• Effective neutrino number shift from keV-vacuum neutrinophilic 2HDM
• Tests of Low-Scale Leptogenesis in Charged Lepton Flavour Violation Experiments
• On direct observation of millicharged particles at $c$-$\tau$ factories and other $e^{+}{e}^{-}$-colliders
• Probing light exotics from a hidden sector at $c$-$\tau$ factories with polarized electron beams
• Axionlike-particle generation by laser-plasma interaction
• Relic Challenges for Vector-Like Fermions as Connectors to a Dark Sector
• The ALP explanation to muon $(g-2)$ and its test at future Tera-$Z$ and Higgs factories
• General Markovian Equation for Scalar Fields in a Slowly Evolving Background
• Neutrino Emissivities as a Probe of the Internal Magnetic Fields of White Dwarfs
• X17 discovery potential in the $\gamma N\to e^{+}{e}^{-}N$ process at electron scattering facilities
• Aspects of Axions and ALPs Phenomenology
• Low-scale leptogenesis with flavour and CP symmetries
• Explorations of pseudo-Dirac dark matter having keV splittings and interacting via transition electric and magnetic dipole moments
• Prospects for Dark Matter Search at the Super c-tau Factory
• Quasi-Sterile Neutrinos from Dark Sectors I. BSM matter effects in neutrino oscillations and the short-baseline anomalies
• Why interpretation matters for BSM searches: a case study with Heavy Neutral Leptons at ATLAS
• LHC experiments for long-lived particles of the dark sector
• Simulation of Dark Bremsstrahlung in GEANT4
• Light dark matter searches with positrons
• Rare few-body decays of the Standard Model Higgs boson
• Factorizing Hidden Particle Production Rates
• Exploiting exotic LHC datasets for long-lived new particle searches
• An introduction to axions and their detection
• New Physics Searches at Kaon and Hyperon Factories
• Indirect detection of long-lived particles in a rich dark sector with a dark vector portal
• The Forward Physics Facility at the High-Luminosity LHC
• Probing axion-like particles coupling to gluons at the LHC
• An Analytic Treatment of Underdamped Axionic Blue Isocurvature Perturbations