Physics Beyond Colliders at CERN: Beyond the Standard Model Working Group Report

Abstract

The Physics Beyond Colliders initiative is an exploratory study aimed at exploiting the full scientific potential of the CERN's accelerator complex and scientific infrastructures through projects complementary to the LHC and other possible future colliders. These projects will target fundamental physics questions in modern particle physics. This document presents the status of the proposals presented in the framework of the Beyond the Standard Model physics working group, and explore their physics reach and the impact that CERN could have in the next 10-20 years on the international landscape.

This document (150 pages, 52 figures) is part of a series of documents produced in the context of the Physics Beyond Colliders study (https://pbc.web.cern.ch). It summarizes the findings of the BSM working group. A shorter overview over the whole PBC study will appear as "Summary Report of Physics Beyond Colliders at CERN". The v1 version of this document contains a few extra references

References in corpus (276)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• A Theory of Dark Matter
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• Data Tables for Lorentz and CPT Violation
• Higgs mass and vacuum stability in the Standard Model at NNLO
• Secluded WIMP Dark Matter
• High-Energy Tests of Lorentz Invariance
• LHCb Detector Performance
• Investigating the near-criticality of the Higgs boson
• The Low-Energy Frontier of Particle Physics
• The $\nu$MSM, Dark Matter and Baryon Asymmetry of the Universe
• New CAST Limit on the Axion-Photon Interaction
• Test of lepton universality using $B^{+}\to K^{+}{\ell }^{+}{\ell }^{-}$ decays
• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• The $\nu$MSM, Dark Matter and Neutrino Masses
• Secluded U(1) below the weak scale
• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• New experimental approaches in the search for axion-like particles
• Test of lepton universality with $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays
• Scalar Dark Matter candidates
• A Search for Invisible Axion Dark Matter with the Axion Dark Matter Experiment
• Baryogenesis via neutrino oscillations
• Higgs boson mass and new physics
• Astrophysical Signatures of Secluded Dark Matter
• Possible interaction between baryons and dark-matter particles revealed by the first stars
• Search for Low-Mass WIMPs with SuperCDMS
• Search for a dark photon in e+e- collisions at BABAR
• A search for light dark matter in XENON10 data
• Neutrinos and Collider Physics
• B-physics anomalies: a guide to combined explanations
• Significant Excess of ElectronLike Events in the MiniBooNE Short-Baseline Neutrino Experiment
• Search for Lepton Flavor Violating Tau Decays into Three Leptons with 719 Million Produced Tau+Tau- Pairs
• Revisiting the bound on axion-photon coupling from Globular Clusters
• First Direct Detection Limits on sub-GeV Dark Matter from XENON10
• Radiatively Induced Lorentz and CPT Violation in Electrodynamics
• A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
• Updated Bounds on Milli-Charged Particles
• Collider Probes of Axion-Like Particles
• Exploring Portals to a Hidden Sector Through Fixed Targets
• Matter and Antimatter in the Universe
• Dielectric Haloscopes: A New Way to Detect Axion Dark Matter
• The WIMPless Miracle: Dark Matter Particles without Weak-scale Masses or Weak Interactions
• Measurement of the Differential Branching Fraction and Forward-Backword Asymmetry for B->K(*)l+l-
• New ALPS Results on Hidden-Sector Lightweights
• FASER: ForwArd Search ExpeRiment at the LHC
• The Sphaleron Rate in the Minimal Standard Model
• New Constraints and Prospects for sub-GeV Dark Matter Scattering off Electrons in Xenon
• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• A precision measurement of the electron's electric dipole moment using trapped molecular ions
• Any Light Particle Search II -- Technical Design Report
• Reduced Limit on the Permanent Electric Dipole Moment of ${}^{199}$Hg
• Broadband and Resonant Approaches to Axion Dark Matter Detection
• FASER's Physics Reach for Long-Lived Particles
• The Phenomenology of Right Handed Neutrinos
• An Improved Limit on the Muon Electric Dipole Moment
• Results on light dark matter particles with a low-threshold CRESST-II detector
• First results from a microwave cavity axion search at 24 micro-eV
• Search for Invisible Decays of a Dark Photon Produced in e+e- Collisions at BaBar
• $K_L\to {\pi }^0\nu \bar{\nu }$ Beyond the Standard Model
• 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
• Anomalies in $B$-decays and $U(2)$ flavour symmetry
• Hunting All the Hidden Photons
• Search for a new gauge boson in the $A^{\prime }$ Experiment (APEX)
• How to find neutral leptons of the nuMSM?
• The ORGAN Experiment: An axion haloscope above 15 GHz
• Probing MeV to 90 GeV axion-like particles with LEP and LHC
• Conceptual Design of the International Axion Observatory (IAXO)
• A Proposal for a Three Detector Short-Baseline Neutrino Oscillation Program in the Fermilab Booster Neutrino Beam
• Higgs-field Portal into Hidden Sectors
• Cosmological bounds on pseudo Nambu-Goldstone bosons
• CDMSlite: A Search for Low-Mass WIMPs using Voltage-Assisted Calorimetric Ionization Detection in the SuperCDMS Experiment
• Projected Sensitivity of the SuperCDMS SNOLAB experiment
• Insights on Dark Matter from Hydrogen during Cosmic Dawn
• Single-electron and single-photon sensitivity with a silicon Skipper CCD
• Revised constraints and Belle II sensitivity for visible and invisible axion-like particles
• Minimal Extension of the Standard Model Scalar Sector
• Thermal Relics in Hidden Sectors
• Analysis of Neutral Higgs-Boson Contributions to the Decays B_s -> l^+l^- and B -> K l^+l^-
• $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ and $K_L\to {\pi }^0\nu \bar{\nu }$ in the Standard Model: Status and Perspectives
• Strong Constraints on Sub-GeV Dark Matter from SLAC Beam Dump E137
• New Detectors to Explore the Lifetime Frontier
• Searching for Long-lived Particles: A Compact Detector for Exotics at LHCb
• Probing Light Thermal Dark-Matter With a Higgs Portal Mediator
• Search for Millicharged Particles at SLAC
• Searching for WISPy Cold Dark Matter with a Dish Antenna
• Searching for axion-like particles with ultra-peripheral heavy-ion collisions
• 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
• SENSEI: First Direct-Detection Constraints on sub-GeV Dark Matter from a Surface Run
• Signs of Dark Matter at 21-cm?
• Search for light massive gauge bosons as an explanation of the $(g-2{)}_{\mu }$ anomaly at MAMI
• Protophobic Fifth Force Interpretation of the Observed Anomaly in ${}^8$Be Nuclear Transitions
• ALPtraum: ALP production in proton beam dump experiments
• New Exclusion Limits for the Search of Scalar and Pseudoscalar Axion-Like Particles from "Light Shining Through a Wall"
• Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
• Design, Calibration, and Performance of the MINERvA Detector
• Lepton-flavour violating $B$ decays in generic $Z^{\prime }$ models
• Decay and Detection of a Light Scalar Boson Mixing with the Higgs
• Light inflaton Hunter's Guide
• Search for dark photons produced in 13 TeV $pp$ collisions
• Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS
• Revisiting Lepton Flavour Universality in B Decays
• Discovering New Light States at Neutrino Experiments
• Accelerating the Discovery of Light Dark Matter
• Dark Sectors at the Fermilab SeaQuest Experiment
• Sterile neutrino searches at future $e^{-}{e}^{+}$, $pp$, and $e^{-}p$ colliders
• 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
• Particle Physics Models for the 17 MeV Anomaly in Beryllium Nuclear Decays
• Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Inclusive Dark Photon Search at LHCb
• Standard-model prediction for direct CP violation in $K\to \pi \pi$ decay
• 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
• Search for axion-like dark matter through nuclear spin precession in electric and magnetic fields
• On a Light Spinless Particle Coupled to Photons
• Phenomenology of a very light scalar (100 MeV $<m_h<$ 10 GeV) mixing with the SM Higgs
• Results on low mass WIMPs using an upgraded CRESST-II detector
• Can annihilating Dark Matter be lighter than a few GeVs?
• Tighter Limits on Dark Matter Explanations of the Anomalous EDGES 21cm Signal
• Search for Neutral Heavy Leptons in a High-Energy Neutrino Beam
• The Liquid Scintillator Neutrino Detector and LAMPF Neutrino Source
• Dark Matter Search in Nucleon, Pion, and Electron Channels from a Proton Beam Dump with MiniBooNE
• Search for pair and single production of vectorlike quarks in final states with at least one $Z$ boson decaying into a pair of electrons or muons in $pp$ collision data collected with the ATLAS detector at $\sqrt{s}=13$ TeV
• Search for hidden-sector bosons in $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Higgs-Mediated tau -> 3 mu in the Supersymmetric Seesaw Model
• Direct search for solar axions by using strong magnetic field and X-ray detectors
• Dark photons from charm mesons at LHCb
• Electric Dipole Moments: A Global Analysis
• Search for a vector gauge boson in phi meson decays with the KLOE detector
• Coupling QCD-scale axion-like particles to gluons
• Search for invisible decays of sub-GeV dark photons in missing-energy events at the CERN SPS
• Measuring the electric dipole moment of the electron in BaF
• Multi-lepton Signatures of a Hidden Sector in Rare B Decays
• 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
• Search for heavy neutrinos mixing with tau neutrinos
• Improved Measurement of the K+ to pi+ nu nubar Branching Ratio
• An Electron Fixed Target Experiment to Search for a New Vector Boson A' Decaying to e+e-
• Unraveling models of CP violation through electric dipole moments of light nuclei
• Further Evidence for the Decay K+ to pi+ neutrino-antineutrino
• Heavy Neutral Leptons at FASER
• Search for Dark Matter in b -> s Transitions with Missing Energy
• 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
• On dark matter models with uniquely spin-dependent detection possibilities
• Search for vector mediator of Dark Matter production in invisible decay mode
• Reopening the window on charged dark matter
• Search for the Decay $K_L\to {\pi }^0{\mu }^{+}{\mu }^{-}$
• Patterns of Flavour Violation in Models with Vector-Like Quarks
• b-physics signals of the lightest CP-odd Higgs in the NMSSM at large tan beta
• Search for heavy neutrinos at Belle
• Search for a Hypothetical 16.7 MeV Gauge Boson and Dark Photons in the NA64 Experiment at CERN
• A low-mass dark matter search using ionization signals in XENON100
• Lepton Flavour Violating Decays of Supersymmetric Higgs Bosons
• Millicharged particles in neutrino experiments
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• Higgs doublet decay as the origin of the baryon asymmetry
• M${}^3$: A New Muon Missing Momentum Experiment to Probe $(g-2{)}_{\mu }$ and Dark Matter at Fermilab
• Resonantly Enhanced Axion-Photon Regeneration
• Dark Higgs Bosons at FASER
• SIMPs through the axion portal
• Constraints on SUSY Lepton Flavour Violation by rare processes
• Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1
• Displaced vertex searches for sterile neutrinos at future lepton colliders
• ALPs at FASER: The LHC as a Photon Beam Dump
• Muon g-2 and searches for a new leptophobic sub-GeV dark boson in a missing-energy experiment at CERN
• Search for light vector boson production in $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}\gamma$ interactions with the KLOE experiment
• On the Importance of Electroweak Corrections for B Anomalies
• Baryon Asymmetry of the Universe in the NuMSM
• Flavor-specific scalar mediators
• Heavy neutral fermions at the high-luminosity LHC
• 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
• $K\to \pi \nu \bar{\nu }$ and ${\epsilon }^{\prime }/\epsilon$ in Simplified New Physics Models
• Differential branching fraction and angular analysis of the $B^{+}\to K^{+}{\mu }^{+}{\mu }^{-}$ decay
• Lepton flavor universality violation without new sources of quark flavor violation
• Axion Searches with Microwave Filters: the RADES project
• Search for heavy neutrinos in $K^{+}\to {\mu }^{+}{\nu }_H$ decays
• Restrictions on the lifetime of sterile neutrinos from primordial nucleosynthesis
• Search for dark matter at $\sqrt{s}=13$ TeV in final states containing an energetic photon and large missing transverse momentum with the ATLAS detector
• Looking for the WIMP Next Door
• The seesaw portal in testable models of neutrino masses
• Limits on the Mixing of Tau Neutrino to Heavy Neutrinos
• Long-lived Heavy Neutrinos from Higgs Decays
• Light new physics in coherent neutrino-nucleus scattering experiments
• Sterile neutrino searches via displaced vertices at LHCb
• Multi-Photon Production in e+e- collisions at sqrt(s) = 181 - 209 GeV
• Search for heavy neutral lepton production in $K^{+}$ decays
• Probing Leptogenesis at Future Colliders
• TORCH: Time of Flight Identification with Cherenkov Radiation
• Cosmological bounds on sub-MeV mass axions
• Search for MeV dark photons in a light-shining-through-walls experiment at CERN
• Schiff moment of the Mercury nucleus and the proton dipole moment
• Probing the muon g_μ-2 anomaly, L_μ - L_τ gauge boson and Dark Matter in dark photon experiments
• NA62 sensitivity to heavy neutral leptons in the low scale seesaw model
• Revisiting Kaon Physics in General $Z$ Scenario
• Proton Fixed-Target Scintillation Experiment to Search for Minicharged Particles
• Long Lived Light Scalars as Probe of Low Scale Seesaw Models
• Search for one large extra dimension with the DELPHI detector at LEP
• Limits on tau Lepton-Flavor Violating Decays in three charged leptons
• Leptoquarks meet ${\epsilon }^{\prime }/\epsilon$ and rare Kaon processes
• Search for the lepton flavour violating decay ${\tau }^{-}\to {\mu }^{-}{\mu }^{+}{\mu }^{-}$
• Search for New Physics with a Mono-Jet and Missing Transverse Energy in pp Collisions at sqrt(s) = 7 TeV
• Heavy sterile neutrinos and supernova explosions
• Model-independent bounds on light pseudoscalars from rare B-meson decays
• Chargino contributions in light of recent ${\epsilon }^{\prime }/\epsilon$
• Gluino-mediated electroweak penguin with flavor-violating trilinear couplings
• Measurements of vacuum magnetic birefringence using permanent dipole magnets: the PVLAS experiment
• Search for Massive Neutrinos in the Decay pi --> e nu
• eta' to eta pi pi Decay as a Probe of a Possible Lowest-Lying Scalar Nonet
• The exact tree-level calculation of the dark photon production in high-energy electron scattering at the CERN SPS
• Minimal Flavor Violation with Axion-like Particles
• Physics Motivation for a Pilot Dark Matter Search at Jefferson Laboratory
• Probing Lepton Flavour Universality with $K\to \pi \nu \bar{\nu }$ decays
• Electromagnetic dipole moments of charged baryons with bent crystals at the LHC
• The Heavy Photon Search Test Detector
• Doubly-Charged Scalars in the Type-II Seesaw Mechanism: Fundamental Symmetry Tests and High-Energy Searches
• Analysis of Long Lived Particle Decays with the MATHUSLA Detector
• R-parity Violation and Light Neutralinos at CODEX-b, FASER, and MATHUSLA
• Overcoming Velocity Suppression in Dark-Matter Direct-Detection Experiments
• Neutral Hadrons Disappearing into the Darkness
• Final Results from the KTeV Experiment on the Decay KL -> pi0 gamma gamma
• Letter of Intent for FASER: ForwArd Search ExpeRiment at the LHC
• Missing energy signature from invisible decays of dark photons at the CERN SPS
• Footprints of leptoquarks: from $R_{K^{(\ast )}}$ to $K\to \pi \nu \bar{\nu }$
• On the search for the electric dipole moment of strange and charm baryons at LHC
• Probing the SUSY with $10$ TeV stop mass in rare decays and CP violation of Kaon
• Results from EDGES High-Band: II. Constraints on Parameters of Early Galaxies
• Light Dark Matter eXperiment (LDMX)
• Search for a Dark Photon in Electro-Produced $e^{+}{e}^{-}$ Pairs with the Heavy Photon Search Experiment at JLab
• Displaced Photon Signal from a Light Scalar in Minimal Left-Right Symmetric Model
• Search for a Low-Mass Scalar Higgs Boson Decaying to a Tau Pair in Single-Photon Decays of Upsilon(1S)
• An Improved Shashlyk Calorimeter
• New Concept for a Neutron Electric Dipole Moment Search using a Pulsed Beam
• A bound on the charm chromo-EDM and its implications
• Improved limits on the hadronic and semi-hadronic CP violating parameters and role of a dark force carrier in the electric dipole moment of ${}^{199}$Hg
• Search for invisible decays of ${\pi }^0,\eta ,{\eta }^{\prime },K_S$ and $K_L$: A probe of new physics and tests using the Bell-Steinberger relation
• Coscattering/Coannihilation Dark Matter in a Fraternal Twin Higgs Model
• Proposal for an Experiment to Search for Light Dark Matter at the SPS
• Gravitino or Axino Dark Matter with Reheat Temperature as high as $10^{16}$ GeV
• Exploring Leptophilic Dark Matter with NA64-$\mu$
• Upper Bounds on epsilon'/epsilon Parameters B_6^{(1/2)} and B_8^{(3/2)} from Large N QCD and other News
• Can we reach the Zeptouniverse with rare K and B_{s,d} decays?
• $K\to \pi \nu \overline{\nu }$ in the MSSM in Light of the ${\epsilon }_K^{\prime }/{\epsilon }_K$ Anomaly
• Deep inelastic $e-\tau$ and $\mu -\tau$ conversion in the NA64 experiment at the CERN SPS
• Searching for a new force at VEPP-3
• Displaced vertex signature of type-I seesaw
• First axion dark matter search with toroidal geometry
• Novel method for the direct measurement of the tau lepton dipole moments
• Sterile neutrinos facing kaon physics experiments
• Towards a medium-scale axion helioscope and haloscope
• A Letter of Intent to Install a milli-charged Particle Detector at LHC P5
• Search for the Familon via $B^{\pm }\to {\pi }^{\pm }{X}^0$, $B^{\pm }\to K^{\pm }{X}^0$, and $B^0\to K_S^0{X}^0$ Decays
• Feasibility of tau lepton electromagnetic dipole moments measurement using bent crystal at the LHC
• A scintillator based muon and KLong detector for the Belle II experiment
• Invisible $K_L$ decays as a probe of new physics
• Fermilab Proton Accelerator Complex Status and Improvement Plans
• Measurement of Branching Fractions and CP Asymmetries in B -> wK Decays and First Evidence of CP Violation in B0 -> wKS0
• Search for light dark matter with the MESA accelerator
• The design and performance of a prototype water Cherenkov optical time-projection chamber
• Study of B Meson Decays with Excited eta and eta' Mesons
• Dark matter search in a Beam-Dump eXperiment (BDX) at Jefferson Lab
• Measurements of branching fractions and CP asymmetries and studies of angular distributions for B to phi phi K decays
• SPS Beam Dump Facility -- Comprehensive Design Study
• Prospects for new physics in $\tau \to l\mu \mu$ at current and future colliders
• Exponentially Light Dark Matter from Coannihilation
• Axion-like Particles from Primakov production in beam-dumps
• The Silicon Vertex Tracker for the Heavy Photon Search Experiment
• Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Υ(1S)
• Search for a Dark Photon in Electro-Produced $e^{+}{e}^{-}$ Pairs with the Heavy Photon Search Experiment at JLab
• A primary electron beam facility at CERN
• Status of the TORCH time-of-flight project

Cited by in corpus (299)

• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• FASER's Physics Reach for Long-Lived Particles
• The Dark Photon
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• Dark photon limits: a handbook
• Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider
• Sterile Neutrinos
• The Present and Future Status of Heavy Neutral Leptons
• The Forward Physics Facility: Sites, Experiments, and Physics Potential
• Detecting and Studying High-Energy Collider Neutrinos with FASER at the LHC
• Measurement of the very rare $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ decay
• Coupling QCD-scale axion-like particles to gluons
• The Search for Feebly-Interacting Particles
• The High Quality QCD Axion and the LHC
• Photoproduction of axion-like particles
• Search for Axionlike and Scalar Particles with the NA64 Experiment
• Prospects for Beyond the Standard Model Physics Searches at the Deep Underground Neutrino Experiment
• Upper limits on the amplitude of ultra-high-frequency gravitational waves from graviton-photon mixing
• The Price of Tiny Kinetic Mixing
• Improved BBN constraints on Heavy Neutral Leptons
• Heavy Neutrinos in displaced vertex searches at the LHC and HL-LHC
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Expression of Interest for the CODEX-b Detector
• Hunt for Light Primordial Black Hole Dark Matter with Ultra-High-Frequency Gravitational Waves
• Direct detection and complementary constraints for sub-GeV dark matter
• An Extended Analysis of Heavy Neutral Leptons during Big Bang Nucleosynthesis
• FORESEE: FORward Experiment SEnsitivity Estimator for the LHC and future hadron colliders
• A frequentist analysis of three right-handed neutrinos with GAMBIT
• Search for heavy neutral lepton production in $K^{+}$ decays to positrons
• Probing dark sectors with long-lived particles at BELLE II
• Misalignment & Co.: (Pseudo-)scalar and vector dark matter with curvature couplings
• Heavy Axion Opportunities at the DUNE Near Detector
• Light Scalars and the KOTO Anomaly
• Hunting wino and higgsino dark matter at the muon collider with disappearing tracks
• Searching in the dark: the hunt for the dark photon
• Searches for dark photons at accelerators
• The Hubble tension and a renormalizable model of gauged neutrino self-interactions
• New physics implications of recent search for $K_L\to {\pi }^0\nu \bar{\nu }$ at KOTO
• The Hubble Tension as a Hint of Leptogenesis and Neutrino Mass Generation
• Axion Kinetic Misalignment and Parametric Resonance from Inflation
• Detecting Dark Matter with Far-Forward Emulsion and Liquid Argon Detectors at the LHC
• Search for $K^{+}$ decays to a muon and invisible particles
• Inelastic Dark Matter Electron Scattering and the XENON1T Excess
• A Dark Seesaw Solution to Low Energy Anomalies: MiniBooNE, the muon $(g-2)$, and BaBar
• Minimal signatures of the Standard Model in non-Gaussianities
• Updated BBN constraints on electromagnetic decays of MeV-scale particles
• Search for millicharged particles in proton-proton collisions at $\sqrt{s}=13$ TeV
• Mapping the viable parameter space for testable leptogenesis
• Probing the Relaxed Relaxion at the Luminosity and Precision Frontiers
• On the interplay between astrophysical and laboratory probes of MeV-scale axion-like particles
• Search for ${\pi }^0$ decays to invisible particles
• Combined search for light dark matter with electron and muon beams at NA64
• Constraints from the CHARM experiment on Heavy Neutral Leptons with tau mixing
• Primordial Gravitational Waves From Black Hole Evaporation in Standard and Non-Standard Cosmologies
• Unveiling Hidden Physics at the LHC
• Photoproduction of axion-like particles in the NA64 experiment
• Extending the reach of FASER, MATHUSLA, and SHiP towards smaller lifetimes using secondary particle production
• A fresh look at ALP searches in fixed target experiments
• Improved exclusion limit for light dark matter from $e^{+}{e}^{-}$ annihilation in NA64
• Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment
• Heavy QCD Axion in $b\to s$ transition: Enhanced Limits and Projections
• Dark Scalars and Heavy Neutral Leptons at DarkQuest
• The Semi-Classical Regime for Dark Matter Self-Interactions
• Long-lived Dark Higgs and Inelastic Dark Matter at Belle II
• Reinterpreting the ATLAS bounds on heavy neutral leptons in a realistic neutrino oscillation model
• Probing Light Gauge Bosons in Tau Neutrino Experiments
• LSND Constraints on the Higgs Portal
• Constraints on light scalars from PS191 results
• Neutrino beam-dump experiment with FASER at the LHC
• Dark Sector Production via Proton Bremsstrahlung
• Crunching Dilaton, Hidden Naturalness
• ALPINIST: Axion-Like Particles In Numerous Interactions Simulated and Tabulated
• Unravelling physics beyond the standard model with classical and quantum anomaly detection
• An allowed window for heavy neutral leptons below the kaon mass
• Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles
• Constraints on New Physics in the Electron g-2 from a Search for Invisible Decays of a Scalar, Pseudoscalar, Vector, and Axial Vector
• Dark Higgs Bosons at Colliders
• Light in the beam dump -- ALP production from decay photons in proton beam-dumps
• Searches for new physics at SND@LHC
• Nonresonant Searches for Axion-Like Particles in Vector Boson Scattering Processes at the LHC
• On sub-GeV Dark Matter Production at Fixed-Target Experiments
• Precise dark matter relic abundance in decoupled sectors
• Fully Geant4 compatible package for the simulation of Dark Matter in fixed target experiments
• Unleashing the full power of LHCb to probe Stealth New Physics
• Sensitivities to feebly interacting particles: public and unified calculations
• Constraining axion-like particles from rare pion decays
• Probing the freeze-in mechanism in dark matter models with $U(1{)}^{\prime }$ gauge extensions
• Searching for muonic forces with the ATLAS detector
• Physics with Far Detectors at Future Lepton Colliders
• A Theory of Dark Pions
• New production channels for light dark matter in hadronic showers
• Direct Detection of Dark Matter -- APPEC Committee Report
• Long-lived Sterile Neutrinos at Belle II in Effective Field Theory
• Search for a Dark Leptophilic Scalar at BABAR
• Challenges and Opportunities of Gravitational Wave Searches above 10 kHz
• Search for a New B-L Z' Gauge Boson with the NA64 Experiment at CERN
• Dark sector searches with the CMS experiment
• LUXE-NPOD: new physics searches with an optical dump at LUXE
• Low-energy effective description of dark $Sp(4)$ theories
• Forbidden frozen-in dark matter
• Pseudo-Goldstone dark matter: gravitational waves and direct-detection blind spots
• Scale Invariant FIMP Miracle
• Progress towards the first measurement of charm baryon dipole moments
• Boosted Neutrinos and Relativistic Dark Particles as Messengers from Reheating
• Belle II sensitivity to long-lived dark photons
• FLArE up dark sectors with EM form factors at the LHC Forward Physics Facility
• Resonant or asymmetric: The status of sub-GeV dark matter
• HECATE: A long lived particle detector concept for the FCC-ee or CEPC
• Supernova Constraints on Dark Flavored Sectors
• Discovering True Muonium at LHCb
• Split SIMPs with Decays
• Light particles with baryon and lepton numbers
• Exotic Higgs Decays
• A search for axion-like particles in light-by-light scattering at the CLIC
• Search for pseudoscalar bosons decaying into $e^{+}{e}^{-}$ pairs in the NA64 experiment at the CERN SPS
• Collider searches of scalar singlets across lifetimes
• Twin Higgs Portal Dark Matter
• Emergent Gravity as the Eraser of Anomalous Gauge Boson Masses, and QFT-GR Concord
• Dark Higgs Dark Matter
• Scalar Dark Matter Candidates -- Revisited
• Searching for Elusive Dark Sectors with Terrestrial and Celestial Observations
• Looking forward to test the KOTO anomaly with FASER
• New Collider Searches for Axion-like Particles Coupling to Gluons
• Discovering Dark Matter at the LHC through Its Nuclear Scattering in Far-Forward Emulsion and Liquid Argon Detectors
• The hunt for sub-GeV dark matter at neutrino facilities: a survey of past and present experiments
• Science Case for the new High-Intensity Muon Beams HIMB at PSI
• New Benchmark Models for Heavy Neutral Lepton Searches
• Neutrino Portals, Terrestrial Upscattering, and Atmospheric Neutrinos
• New Long Lived Particles Searches in Heavy Ion Collisions at the LHC
• Search for low-mass dilepton resonances in Higgs boson decays to four-lepton final states in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Flavour anomalies and the muon $g-2$ from feebly interacting particles
• Enhancing Searches for Heavy QCD Axions via Dimuon Final States
• Dark Matter Candidates and Searches
• Pair production of dark particles in meson decays
• The WIMP Paradigm: Theme and Variations
• Supernova Limits on Muonic Dark Forces
• Phenomenology of axion-like particles with universal fermion couplings -- revisited
• Renormalizable Models of Flavor-Specific Scalars
• Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• ALP Searches at the LHC: FASER as a Light Shining through Walls Experiment
• Leptophilic bosons and muon g-2 at lepton colliders
• Patterns of CP violation from mirror symmetry breaking in the $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ Dalitz plot
• Probing Long-lived Particles at Higgs Factories
• Detection of high-frequency gravitational waves using high-energy pulsed lasers
• Dark-sector physics in the search for the rare decays $K^{+}\to {\pi }^{+}\bar{\nu }\nu$ and $K_L\to {\pi }^0\bar{\nu }\nu$
• Muonic vs electronic dark forces: a complete EFT treatment for atomic spectroscopy
• Searches for long-lived dark photons at proton accelerator experiments
• Energetic long-lived particles in the CMS muon chambers
• Long-Lived Light Mediators from Higgs boson Decay at HL-LHC, FCC-hh and a Proposal of Dedicated LLP Detectors for FCC-hh
• Principle of Multiple Point Criticality in Multi-Scalar Dark Matter Models
• $\tau \to \ell +$ invisible through invisible-savvy collider variables
• Probing HNL-ALP couplings at colliders
• Search for a long-lived spin-0 mediator in $b\to s$ transitions at the Belle II experiment
• LHCb potential to discover long-lived new physics particles with lifetimes above 100 ps
• Leptophilic-portal Dark Matter in the Light of AMS-02 positron excess
• Searching for Muonphilic Dark Sectors with Proton Beams
• Dark Photons and Displaced Vertices at the MUonE Experiment
• ACROPOLIS: A generiC fRamework fOr Photodisintegration Of LIght elementS
• Quark flavor violation and axion-like particles from top-quark decays at the LHC
• Probing some photon portals to new physics at intensity frontier experiments
• The quirk signal at FASER and FASER 2
• Dark matter search with the BDX-MINI experiment
• Neutrino Masses from Low Scale Partial Compositeness
• Dark Matter in the Type Ib Seesaw Model
• Measurement of the $K^{+}\to {\pi }^{+}\gamma \gamma$ decay
• Leptonic scalar portal: Origin of muon $g-2$ anomaly and dark matter?
• Portal Effective Theories: A framework for the model independent description of light hidden sector interactions
• Primordial neutrinos and new physics: novel approach to solving neutrino Boltzmann equation
• Constraints on the electron-to-proton mass ratio variation at the epoch of reionization
• Searching for new physics at $\mu \to e$ facilities with ${\mu }^{+}$ and ${\pi }^{+}$ decays at rest
• Dark Radiation from the Primordial Thermal Bath in Momentum Space
• Probing hyperon electric dipole moments with a full angular analysis
• Projected NA62 sensitivity to heavy neutral lepton production in $K^{+}\to {\pi }^0{e}^{+}N$ decays
• New Physics Search at the CEPC: a General Perspective
• Advancing the phenomenology of GeV-scale axion-like particles
• New bounds on axion-like particles from MicroBooNE
• Screening the Higgs portal
• SHADOWS (Search for Hidden And Dark Objects With the SPS)
• Graph Generative Models for Fast Detector Simulations in High Energy Physics
• Stellar cooling limits on light scalar boson revisited
• New perspective in searching for axion-like particles from flavor physics
• Leading Logs in QCD Axion Effective Field Theory
• Terrestrial Probes of Electromagnetically Interacting Dark Radiation
• Searching for heavy neutral leptons coupled to axion-like particles at the LHC far detectors and SHiP
• Dark Photon Search at Yemilab, Korea
• The Muon Magnetic Moment and Physics Beyond the Standard Model
• How new physics affects primordial neutrinos decoupling: Direct Simulation Monte Carlo approach
• On the challenges of searching for GeV-scale long-lived particles at the LHC
• The ALP explanation to muon $(g-2)$ and its test at future Tera-$Z$ and Higgs factories
• Gamma Factory Searches for Extremely Weakly-Interacting Particles
• Searching for Axino-Like Particle at Fixed Target Experiments
• Searching for New Long Lived Particles in Heavy Ion Collisions at the LHC
• New physics decaying into metastable particles: impact on cosmic neutrinos
• Higgs Portal From The Atmosphere To Hyper-K
• Low-Scale Leptogenesis with Low-Energy Dirac CP-Violation
• Search for dark photon and dark matter signatures around electron-positron colliders
• Probing the electron-to-proton mass ratio gradient in the Milky Way with class I methanol masers
• On the Minimal Mixing of Heavy Neutrinos
• LEvEL: Low-Energy Neutrino Experiment at the LHC
• Axion-Like Particles at the ILC Giga-Z
• Constraints on the kinetic mixing parameter ${\epsilon }^2$ for the light dark photons from dilepton production in heavy-ion collisions in the few-GeV energy range
• X17 discovery potential in the $\gamma N\to e^{+}{e}^{-}N$ process at electron scattering facilities
• Dynamics of metastable Standard Model particles from long-lived particle decays in the MeV primordial plasma
• Freezing-in the Pure Dark Axion Portal
• Baryons, multi-hadron systems, and composite dark matter in non-relativistic QCD
• Prospects for Dark Matter Search at the Super c-tau Factory
• Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay
• Towards the optimal beam dump experiment to search for feebly interacting particles
• Probing new physics scenarios of muon $g-2$ via $J/\psi$ decay at BESIII
• Fast and Flexible Neutrino Decoupling Part I: The Standard Model
• Constraints for scalars and pseudoscalars from ${\left(g-2\right)}_l$ and existing $e^{+}{e}^{-}$ colliders
• Hidden-Sector Neutrinos and Freeze-In Leptogenesis
• Towards a Localised S-Matrix Theory
• Search for a dark leptophilic scalar produced in association with ${\tau }^{+}{\tau }^{-}$ pair in $e^{+}{e}^{-}$ annihilation at center-of-mass energies near 10.58 GeV
• First Evaluation of Meson and $\tau$ lepton Spectra and Search for Heavy Neutral Leptons at ILC Beam Dump
• Light scalar beyond the Higgs mixing limit
• Exotic Higgs decays into displaced jets at the LHeC
• Long-Lived Particles and the Quiet Sun
• Search for hadronic decays of feebly-interacting particles at NA62
• Exploring Supersymmetric CP Violation after LHC Run 2 with Electric Dipole Moments and B Observables
• Probing an intrinsically flavorful ALP via tau-lepton flavor physics
• String (gravi)photons, "dark brane photons", holography and the hypercharge portal
• Looking forward to inelastic DM with electromagnetic form factors at FASER and beam dump experiments
• Induced non-Abelian Chern-Simons effective action in very special relativity
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• Search for millicharged particles in proton-proton collisions at $\sqrt{s}=13.6$ TeV
• On the impact of heavy meson production spectra on searches for heavy neutral leptons
• Testing Heavy Neutral Leptons in Cosmic Ray Beam Dump experiments
• Searching for axions with kaon decay at rest
• Baryogenesis in a Parity Solution to the Strong CP Problem
• Improved constraints for axion-like particles from 3-photon events at $e^{+}{e}^{-}$ colliders
• Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment
• Freeze-in dark matter in EDGES 21-cm signal
• Studies for New Experiments at the CERN M2 Beamline within "Physics Beyond Colliders": AMBER/COMPASS++, NA64mu, MuonE
• Particle dispersion in the classical vector dark matter background
• Dark photons from pions produced in ultraperipheral $PbPb$ collisions
• Discovering the Origin of Neutrino Masses at SHiP
• Search for a heavy neutral lepton that mixes predominantly with the tau neutrino
• Constraints on Long-Ranged Interactions Between Dark Matter and the Standard Model
• Production of GeV-scale heavy neutral leptons in 3-body decays. Comparison with the PYTHIA approach
• Probing Solar Heavy Neutrinos with Heliospheric Electrons
• Charged lepton flavor violation in light of Muon $g-2$
• Searching for long-lived light neutralinos and axionlike particles at the SHiNESS experiment
• Production of Chern-Simons bosons in decays of mesons
• QuGrav: Bringing gravitational waves to light with Qumodes
• Estimation of CP violating EDMs from known mechanisms in the SM
• Search for invisible dark photon in $\gamma e$ scattering at future lepton colliders
• LHC experiments for long-lived particles of the dark sector
• New Particles at the Z-Pole: Tera-Z factories as discovery and precision machines
• Primary gravitational waves at high frequencies I: Origin of suppression in the power spectrum
• Cosmic Neutrinos as a Window to Departures from Special Relativity
• Light dark matter searches with positrons
• Long-lived particle reconstruction downstream of the LHCb magnet
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• From oversimplified to overlooked: the case for exploring Rich Dark Sectors
• Generating the Electro-Weak Scale by Vector-like Quark Condensation
• Factorizing Hidden Particle Production Rates
• Implications of recent ${\left(g-2\right)}_{\mu }$ measurements for MeV-GeV dark sector searches
• Star Shearing Season -- Transient Signals in Wave-like Dark Matter Experiments from Black Hole Formation
• Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino Mass Relevant Particles
• Asymptotically-Flat Black Hole Solutions in Symmergent Gravity
• Multi-track Displaced Vertices at B-Factories
• Inelastic Dark Matter at the Fermilab Short Baseline Neutrino Program
• PREFACE: A search for long-lived particles at the Large Hadron Collider
• Search for sub-GeV Scalars in $e^{+}{e}^{-}$ collisions
• New Physics Searches at Kaon and Hyperon Factories
• Higgs-Induced Screening Mechanisms in Scalar-Tensor Theories
• Minicharged Particle Sensitivity of the MAPP Outrigger Detector
• Strongly-interacting massive particle and dark photon in the era of intensity frontier
• Vector dark matter production during inflation in the gradient-expansion formalism
• The Forward Physics Facility at the High-Luminosity LHC
• Constraints on millicharged particles from nuclear gamma-decays
• Indirect detection of long-lived particles in a rich dark sector with a dark vector portal
• Layout optimization for the LUXE-NPOD experiment
• Constraints on Kinetic Mixing of Dark Photons from Dilepton Spectra
• Divergences in the effective loop interaction of the Chern-Simons bosons with leptons. The unitary gauge case
• Search for dark Higgs inflaton with curvature couplings at LHC experiments
• New physics particles mixing with mesons: production in the fragmentation chain
• New Physics Searches via Beam Normal Spin Asymmetry in Bhabha Scattering
• Nucleosynthesis and CMB bounds on photophilic ALPs: a fresh look
• Naturally-Coupled Dark Sectors
• Phenomenology of Leptophilic Gauge Interactions at Future $e^{+}{e}^{-}$ Colliders
• Search for the charged lepton flavor violating decay $\psi (3686)\to e^{\pm }{\mu }^{\mp }$
• A dump leakage calorimeter to measure the flux of high-energy electrons and photons
• Data-Driven Predictions for Dark Photon and Millicharged Particle Production
• Recent highlights and plans of the AWAKE experiment
• Dark scalar reinterpretation of searches for Higgs boson decays into long-lived particles at the LHC
• Neutrino flavor mixing with approximate $\mu$-$\tau$ symmetry within the low-scale minimal linear seesaw model
• Overview of the ESCAPE Dark Matter Test Science Project for Astronomers
• Di-decay signature of new physics particles at intensity frontier experiments
• Searching for exotic scalars at fusion reactors
• Constraints on the parameters of the neutrino extension of the Standard Model
• Dark photon searches via Higgs boson production at the LHC and beyond
• Search for heavy neutrinos at CERN SPS
• Symmetries, Dark Matter and Minicharged Particles
• The SHiP experiment at CERN
• Search for axion-like particles with electron and positron beams at KEK Linac
• Atmospheric resonant production for light dark sectors
• Light inflaton model in a metastable Universe