A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case

Abstract

This paper describes the physics case for a new fixed target facility at CERN SPS. The SHiP (Search for Hidden Particles) experiment is intended to hunt for new physics in the largely unexplored domain of very weakly interacting particles with masses below the Fermi scale, inaccessible to the LHC experiments, and to study tau neutrino physics. The same proton beam setup can be used later to look for decays of tau-leptons with lepton flavour number non-conservation, $\tau \to 3\mu$ and to search for weakly-interacting sub-GeV dark matter candidates. We discuss the evidence for physics beyond the Standard Model and describe interactions between new particles and four different portals - scalars, vectors, fermions or axion-like particles. We discuss motivations for different models, manifesting themselves via these interactions, and how they can be probed with the SHiP experiment and present several case studies. The prospects to search for relatively light SUSY and composite particles at SHiP are also discussed. We demonstrate that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the Standard Model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation

200 pages + appendices/references

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• Tidal Deformability of Dark Matter Admixed Neutron Stars
• Three-Flavoured Non-Resonant Leptogenesis at Intermediate Scales
• Quantum Forces from Dark Matter and Where to Find Them
• Gravitational Waves from First-Order Phase Transition in a Simple Axion-Like Particle Model
• Model-independent bounds on light pseudoscalars from rare B-meson decays
• MeV-scale sterile neutrino decays at the Fermilab Short-Baseline Neutrino program
• Low-scale leptogenesis with three heavy neutrinos
• Explaining the XENON1T excess with Luminous Dark Matter
• Axion-like Particles at Future Neutrino Experiments: Closing the "Cosmological Triangle"
• Probing leptogenesis with GeV-scale sterile neutrinos at LHCb and BELLE II
• Observation of collider muon neutrinos with the SND@LHC experiment
• FACET: A new long-lived particle detector in the very forward region of the CMS experiment
• Sensitivity of Lepton Number Violating Meson Decays in Different Experiments
• Uniting low-scale leptogeneses
• Mapping the viable parameter space for testable leptogenesis
• GeV-scale hot sterile neutrino oscillations: a derivation of evolution equations
• Heavy neutral leptons at ANUBIS
• QCD Axion on Hilltop by a Phase Shift of $\pi$
• Improved Constraints on Sterile Neutrinos in the MeV to GeV Mass Range
• A Dark Matter Interpretation of Excesses in Multiple Direct Detection Experiments
• Displaced heavy neutrinos from $Z^{\prime }$ decays at the LHC
• Doubly-Charged Scalars in the Type-II Seesaw Mechanism: Fundamental Symmetry Tests and High-Energy Searches
• Baryogenesis from L-violating Higgs-doublet decay in the density-matrix formalism
• On the interplay between astrophysical and laboratory probes of MeV-scale axion-like particles
• Implications of BBN Bounds for Cosmic Ray Upscattered Dark Matter
• Vector SIMP dark matter
• Leptogenesis from Oscillations of Heavy Neutrinos with Large Mixing Angles
• Detecting Hidden Particles with MATHUSLA
• R-parity Violation and Light Neutralinos at CODEX-b, FASER, and MATHUSLA
• Asymmetric Matters from a Dark First-Order Phase Transition
• Constraints from the CHARM experiment on Heavy Neutral Leptons with tau mixing
• Inclusive Displaced Vertex Searches for Heavy Neutral Leptons at the LHC
• A flavoured dark sector
• 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
• A fresh look at ALP searches in fixed target experiments
• Neutrino masses, leptogenesis and dark matter from small lepton number violation?
• Tau Neutrinos in the Next Decade: from GeV to EeV
• Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment
• Dark Scalars and Heavy Neutral Leptons at DarkQuest
• Sterile neutrino Dark Matter production from scalar decay in a thermal bath
• Neutrinoless double $\beta$ decay and low scale leptogenesis
• Solar $\gamma$-rays as a Complementary Probe of Dark Matter
• On DUNE prospects in the search for sterile neutrinos
• Constraints on Relaxion Windows
• Sensitivity to Majorana neutrinos in $\Delta L=2$ decays of $B_c$ meson at LHCb
• Constraints on long-lived light scalars with flavor-changing couplings and the KOTO anomaly
• ALP inflation and Big Bang on Earth
• Neutrino Masses from a Dark Neutrino Sector below the Electroweak Scale
• Heavy sterile neutrino emission in core-collapse supernovae: Constraints and signatures
• Reinterpreting the ATLAS bounds on heavy neutral leptons in a realistic neutrino oscillation model
• Dark Matter and Neutrino Mass from the Smallest Non-Abelian Chiral Dark Sector
• The experimental facility for the Search for Hidden Particles at the CERN SPS
• Displaced Photon Signal from a Light Scalar in Minimal Left-Right Symmetric Model
• Higgs relaxation after inflation
• Neutrino Up-scattering via the Dipole Portal at Forward LHC Detectors
• Neutrino Structure Functions from GeV to EeV Energies
• Probing Light Gauge Bosons in Tau Neutrino Experiments
• Boosted Self-interacting Dark Matter in a Multi-component Dark Matter Model
• Light Fermionic WIMP Dark Matter with Light Scalar Mediator
• Relaxion and light (pseudo)scalars at the HL-LHC and lepton colliders
• Constraints on light scalars from PS191 results
• Charming ALPs
• Crunching Dilaton, Hidden Naturalness
• The Weak Scale as a Trigger
• Revisiting the production of ALPs at B-factories
• Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles
• Coscattering/Coannihilation Dark Matter in a Fraternal Twin Higgs Model
• An allowed window for heavy neutral leptons below the kaon mass
• Electric Dipole Moments of Charged Leptons with Sterile Fermions
• Flavor Cosmology: Dynamical Yukawas in the Froggatt-Nielsen Mechanism
• Searches for new physics at SND@LHC
• Sterile neutrino dark matter via coinciding resonances
• Light in the beam dump -- ALP production from decay photons in proton beam-dumps
• Seeking for sterile neutrinos with displaced leptons at the LHC
• Leptonic Scalars at the LHC
• A little theory of everything, with heavy neutral leptons
• Probing naturally light singlets with a displaced vertex trigger
• R-parity Violation and Light Neutralinos at ANUBIS and MAPP
• Unleashing the full power of LHCb to probe Stealth New Physics
• The active muon shield in the SHiP experiment
• Searching for a Sterile Neutrino in Tau Decays at B-factories
• Precise dark matter relic abundance in decoupled sectors
• Photons, Photon Jets and Dark Photons at 750 GeV and Beyond
• Constraining axion-like particles from rare pion decays
• Probing the freeze-in mechanism in dark matter models with $U(1{)}^{\prime }$ gauge extensions
• Entanglement based tomography to probe new macroscopic forces
• Implication of the hidden sub-GeV bosons for the $(g-2{)}_{\mu }$, ${}^8$Be-${}^4$He anomaly, proton charge radius, EDM of fermions and dark axion portal
• Sensitivities to feebly interacting particles: public and unified calculations
• Heavy Neutral Leptons from kaon decays in the SHiP experiment
• Dark sector-photon interactions in proton-beam experiments
• Beta and Neutrinoless Double Beta Decays with KeV Sterile Fermions
• A Theory of Dark Pions
• Adiabatic Electroweak Baryogenesis Driven by an Axion-like Particle
• Fingerprint of GeV scale right-handed neutrinos on inflationary gravitational waves and PTA data
• Physics with Far Detectors at Future Lepton Colliders
• Comprehensive constraints on heavy sterile neutrinos from core-collapse supernovae
• Probing New Gauge Forces with a High-Energy Muon Beam Dump
• Light Hidden Mesons through the Z Portal
• Challenges for heavy QCD axion inflation
• Direct Detection of Dark Matter -- APPEC Committee Report
• The MicroBooNE Experiment, the NuMI Absorber, and Heavy Neutral Leptons
• Parameter space of baryogenesis in the $\nu$MSM
• A Light Scalar Explanation of $(g-2{)}_{\mu }$ and the KOTO Anomaly
• Lepton-Jets and Low-Mass Sterile Neutrinos at Hadron Colliders
• Constraining active-sterile neutrino transition magnetic moments at DUNE near and far detectors
• Probing axion-like particles with $\gamma \gamma$ final states from vector boson fusion processes at the LHC
• Event generation for beam dump experiments
• A Supersymmetric Theory of Baryogenesis and Sterile Sneutrino Dark Matter from $B$ Mesons
• Forbidden frozen-in dark matter
• On the origin of matter in the Universe
• Sterile neutrino dark matter via GeV-scale leptogenesis?
• Searches for Atmospheric Long-Lived Particles
• Asymmetric Dark Matter May Not Be Light
• Massive sterile neutrinos in the early universe: From thermal decoupling to cosmological constraints
• 511 keV line constraints on feebly interacting particles from supernovae
• Search for dark sector physics with NA64
• Boosted Neutrinos and Relativistic Dark Particles as Messengers from Reheating
• Maximally self-interacting dark matter: models and predictions
• Light $Z^{\prime }$ and Dark Matter from U(1)${}_X$ Gauge Symmetry
• Dedicated Strategies for Triboson Signals from Cascade Decays of Vector Resonances
• A Predictive Mirror Twin Higgs with Small ${\mathbf{Z}}_2$ Breaking
• Belle II sensitivity to long-lived dark photons
• Sterile neutrinos facing kaon physics experiments
• Dirac vs. Majorana HNLs (and their oscillations) at SHiP
• Enhancing Sensitivities to Long-lived Particles with High Granularity Calorimeters at the LHC
• Constraining general U(1) interactions from neutrino-electron scattering measurements at DUNE near detector
• Discovering True Muonium at LHCb
• Common explanation to the $R_{K^{(\ast )}}$, $R_{D^{(\ast )}}$ and ${\epsilon }^{\prime }/\epsilon$ anomalies in a 3HDM+${\nu }_R$ and connections to neutrino physics
• Summary Report of Physics Beyond Colliders at CERN
• Dark Matter Constraints on Low Mass and Weakly Coupled B-L Gauge Boson
• The lensing properties of subhaloes in massive elliptical galaxies in sterile neutrino cosmologies
• Upper Bound on Thermal Gravitational Wave Backgrounds from Hidden Sectors
• Self-interacting dark matter with a stable vector mediator
• Leptogenesis and neutral gauge bosons
• Axions: From Magnetars and Neutron Star Mergers to Beam Dumps and BECs
• On the Flavour Structure of Anomaly-free Hidden Photon Models
• Triggering on Emerging Jets
• Constraints on Axion-Lepton coupling from Big Bang Nucleosynthesis
• Hadronic decays of a light Higgs-like scalar
• Looking forward to test the KOTO anomaly with FASER
• Linear Sigma Dark Matter
• Searching for Elusive Dark Sectors with Terrestrial and Celestial Observations
• Dark Matter Candidates of a Very Low Mass
• Probing sub-GeV dark sectors via high energy proton beams at LBNF/DUNE and MiniBooNE
• Constraining Right Handed Gauge Boson Mass from Lepton Number Violating Meson Decays in a Low Scale Left Right Model
• Implications of the dark axion portal for SHiP and FASER and the advantages of monophoton signals
• Exploring properties of long-lived particles in inelastic dark matter models at Belle II
• Hunting Inflaton at FASER
• Implication of the dark axion portal for the EDM of fermions and dark matter probing with NA64$e$, NA64$\mu$, LDMX, $\mbox{M}^3$, and BaBar
• Axial vectors in DarkCast
• Gravitational Waves-Tomography of Low-Scale-Leptogenesis
• Searching for Boosted Dark Matter mediated by a new Gauge Boson
• The hunt for sub-GeV dark matter at neutrino facilities: a survey of past and present experiments
• Higgs portal to dark matter and $B\to K^{(\ast )}$ decays
• New Long Lived Particles Searches in Heavy Ion Collisions at the LHC
• Heavy Neutrinos at the FCC-hh in the $U(1{)}_{B-L}$ Model
• Axionic Electroweak Baryogenesis
• Impact of cosmological and astrophysical constraints on dark matter simplified models
• Probing new physics with displaced vertices: muon tracker at CMS
• Light Scalars at FASER
• Collider constraints on axion-like particles
• Dark Matter Candidates and Searches
• Light scalar production from Higgs bosons and FASER 2
• Pair production of dark particles in meson decays
• Supernova Limits on Muonic Dark Forces
• Cosmological Constraints on Dark Scalar
• Prompt neutrinos and intrinsic charm at SHiP
• Opportunities for probing $U(1{)}_{T3R}$ with light mediators
• A testable hidden-sector model for Dark Matter and neutrino masses
• All-in-one Relaxion, a unified solution to five BSM puzzles
• Supersizing axions with small size instantons
• Lepton Number Violation: Seesaw Models and Their Collider Tests
• Design of a high power production target for the Beam Dump Facility at CERN
• Probing active-sterile neutrino transition magnetic moment on coherent elastic solar neutrino-nucleus scattering
• Renormalizable Models of Flavor-Specific Scalars
• General Kinetic Mixing in Gauged $U(1{)}_{L_{\mu }-L_{\tau }}$ Model for Muon $g-2$ and Dark Matter
• Implications of Two-component Dark Matter Induced by Forbidden Channels and Thermal Freeze-out
• A Robust Description of Hadronic Decays in Light Vector Mediator Models
• Monojet search for heavy neutrinos at future $Z$-factories
• Getting a THUMP from a WIMP
• Constraining Electroweakinos in the Minimal Dirac Gaugino Model
• Kinetic equations for sterile neutrinos from thermal fluctuations
• Consistency of a gauged two-Higgs-doublet model: Scalar sector
• Probing light mediators at the MUonE experiment
• Prospects for detecting axionlike particles at the Coherent CAPTAIN-Mills experiment
• How dark is the ${\nu }_R$-philic dark photon?
• MATHUSLA: A Detector Proposal to Explore the Lifetime Frontier at the HL-LHC
• Quasielastic production of polarized $\tau$ leptons in ${\nu }_{\tau }$ and ${\bar{\nu }}_{\tau }$ scattering from nucleons
• Exploring GeV-scale Majorana neutrinos in lepton-number-violating ${\Lambda }_b^0$ baryon decays
• Probing Left-Right Seesaw using Beam Polarization at an $e^{+}{e}^{-}$ Collider
• Freeze-in Dark Matter from a Minimal B-L Model and Possible Grand Unification
• Collider constraints on dark mediators
• Purely flavor-changing Z' bosons and where they might hide
• Consistency of Gauged Two Higgs Doublet Model: Gauge Sector
• Multimessenger search for electrophilic feebly interacting particles from supernovae
• Searching for light long-lived neutralinos at Super-Kamiokande
• Leptogenesis from oscillations and dark matter
• Target mass corrections in lepton--nucleus DIS: theory and applications to nuclear PDFs
• Probing HNL-ALP couplings at colliders
• Sterile neutrino dark matter in a U(1) extension of the standard model
• Hidden Monopole Dark Matter via Axion Portal and its Implications for Direct Detection Searches, Beam-Dump Experiments, and the $H_0$ Tension
• Probing Heavy Sterile Neutrinos at Ultrahigh Energy Neutrino Telescopes via the Dipole Portal
• Axion-Like Particle Production at Beam Dump Experiments with Distinct Nuclear Excitation Lines
• Searches for long-lived dark photons at proton accelerator experiments
• Examining the origin of dark matter mass at colliders
• Leptonic Meson Decays into Invisible ALP
• Is it possible to discover a dark matter particle with an accelerator?
• Testing electroweak scale seesaw models at $e^{-}\gamma$ and $\gamma \gamma$ colliders
• Probing some photon portals to new physics at intensity frontier experiments
• BSM Targets at a "Target-less DUNE"
• Leptophilic-portal Dark Matter in the Light of AMS-02 positron excess
• Robust constraints on feebly interacting particles using XMM-Newton
• Emergent/Composite axions
• Searching for Muonphilic Dark Sectors with Proton Beams
• Long-lived heavy neutral leptons at lepton colliders as a probe of left-right symmetric models
• The quirk signal at FASER and FASER 2
• LHCb potential to discover long-lived new physics particles with lifetimes above 100 ps
• Exploring non-radial oscillation modes in dark matter admixed neutron stars
• Exploring the potential of FCC-hh to search for particles from $B$ mesons
• PASSAT: Particle Accelerator helioScopes for Slim Axion-like-particle deTection
• Sensitivity of the FACET experiment to Heavy Neutral Leptons and Dark Scalars
• Affleck-Dine Cogenesis of Baryon and Dark Matter
• Low Scale Inflation at High Energy Colliders and Meson Factories
• Dark matter and observable Lepton Flavour Violation
• Inferring the nature of active neutrinos: Dirac or Majorana?
• Neutrino Masses from Low Scale Partial Compositeness
• Collider and astrophysical signatures of light scalars with enhanced $\tau$ couplings
• Primordial neutrinos and new physics: novel approach to solving neutrino Boltzmann equation
• Long-lived heavy particles in neutrino mass models
• New Physics Search at the CEPC: a General Perspective
• Axial and pseudoscalar form factors from charged current quasielastic neutrino-nucleon scattering
• Portal Effective Theories: A framework for the model independent description of light hidden sector interactions
• Heavy Neutral Leptons -- Advancing into the PeV domain
• Projected NA62 sensitivity to heavy neutral lepton production in $K^{+}\to {\pi }^0{e}^{+}N$ decays
• Measuring lepton number violation in heavy neutral lepton decays at the future muon collider
• The Magnet of the Scattering and Neutrino Detector for the SHiP experiment at CERN
• Decaying light particles in the SHiP experiment. II. Signal rate estimates for light neutralinos
• Lepton Phenomenology of Stueckelberg Portal to Dark Sector
• Double-Hit Signature of Millicharged Particles in 3D segmented neutrino detector
• Gamma Ray Signals from Cosmic Ray Scattering on Axion-Like Particles
• Probing the flavor-specific scalar mediator for the muon $(g-2)$ deviation, the proton radius puzzle and the light dark matter production
• SHADOWS (Search for Hidden And Dark Objects With the SPS)
• Triangle Inequalities for Majorana-Neutrino Magnetic Moments
• Beam impact tests of a prototype target for the Beam Dump Facility at CERN: experimental setup and preliminary analysis of the online results
• Throwing away antimatter via neutrino oscillations during the reheating era
• Boosting Assisted Annihilation for a Cosmologically Safe MeV Scale Dark Matter
• On dark atoms, massive dark photons and millicharged sub-components
• Light $Z^{\prime }$ and Dirac fermion dark matter in the $B-L$ model
• Decaying light particles in the SHiP experiment. III. Signal rate estimates for scalar and pseudoscalar sgoldstinos
• New perspective in searching for axion-like particles from flavor physics
• Leading Logs in QCD Axion Effective Field Theory
• Independent quark/antiquark fragmentation to massive particles in proton-proton collisions
• Sensitivity Reach on the Heavy Neutral Leptons and $\tau$-Neutrino Mixing $|U_{\tau N}{|}^2$ at the HL-LHC
• Sensitivity potential to a light flavor-changing scalar boson with DUNE and NA64$\mu$
• Design Development for the Beam Dump Facility Target Complex at CERN
• Secretly Asymmetric Dark Matter
• Constraining dark photon model with dark matter from CMB spectral distortions
• Dark Photon Search at Yemilab, Korea
• Searching for New Long Lived Particles in Heavy Ion Collisions at the LHC
• Solar neutrinos, helicity effects and new affine gravity with torsion II
• Dark matter transient annihilations in the early Universe
• Searching for heavy neutral leptons coupled to axion-like particles at the LHC far detectors and SHiP
• Searching for Axino-Like Particle at Fixed Target Experiments
• PASSAT at Future Neutrino Experiments: Hybrid Beam-Dump-Helioscope Facilities to Probe Light Axion-Like Particles
• Light hidden photon production in high energy collisions
• Measurement of prompt open-charm production cross sections in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Is light thermal scalar dark matter possible?
• Constraints on CP-odd ALP couplings from EDM limits of fermions
• Perturbative Higgs CP violation, unitarity and phenomenology
• Low-scale Resonant Leptogenesis in $SU(5)$ GUT with ${\mathcal{T}}_{13}$ Family Symmetry
• Leptophilic Gauge Bosons at Lepton Beam Dump Experiments
• Producing and detecting long-lived particles at different experiments at the LHC
• Right-handed neutrinos: the hunt is on!
• Renormalization of effective field theories via on-shell methods: the case of axion-like particles
• Dark Matter in scalar Sp(N) gauge dynamics
• Probing baryon asymmetry of the Universe at LHC and SHiP
• Global symmetries, hidden sectors and emergent (dark) vector interactions
• Freeze-in and freeze-out generation of lepton asymmetries after baryogenesis in the $\nu$MSM
• Experimental constraints on the neutrino and gauge parameters of the super-weak U(1) extension of the standard model
• eV Hubble Scale Inflation with Radiative Plateau: Very light Inflaton, Reheating & Dark Matter in B-L Extensions
• Extra dimensions with light and heavy neutral leptons: An application to CE$\nu$NS
• Axion-modified photon propagator, Coulomb potential and Lamb-shift
• Searching for new physics with three-particle correlations in $pp$ collisions at the LHC
• In-flight positron annihilation as a probe of feebly interacting particles
• Flavor phenomenology of light dark sectors
• Freeze-out Forbidden Dark Matter in the Hidden Sector in the Mass Range from sub-GeV to TeV
• Production asymmetry of ${\nu }_{\tau }$ neutrinos and ${\overline{\nu }}_{\tau }$ antineutrinos from a fixed target experiment SHiP
• On the Minimal Mixing of Heavy Neutrinos
• Hidden sector searches with SHiP and NA62
• Axion-driven hybrid inflation over a barrier
• Resonant Assisted Annihilation
• Heavy Neutral Leptons at Beam Dump Experiments of Future Lepton Colliders
• Detector-size Upper Bounds on Dark Hadron Lifetime from Cosmology
• Axion-like Particles from Primakov production in beam-dumps
• Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay
• Flavor-changing light bosons with accidental longevity
• Perturbativity in the seesaw mechanism
• LHC Lifetime Frontier and Visible Decay Searches in Composite Asymmetric Dark Matter Models
• Towards the optimal beam dump experiment to search for feebly interacting particles
• Uncertainties of hadronic scalar decay calculations
• Dark Vector Mesons at LHC Forward Detector Searches
• Hidden-Sector Neutrinos and Freeze-In Leptogenesis
• Gauging lepton flavor SU(3) for the muon $g-2$
• Towards a Localised S-Matrix Theory
• Emerging Jets Displaced into the Future
• Confronting the low-scale seesaw and leptogenesis with neutrinoless double beta decay
• Non-Minimal Approximation for the Type-I Seesaw Mechanism
• Long-lived doubly charged scalars in the left-right symmetric model: catalyzed nuclear fusion and collider implications
• Search for new physics with the SHiP experiment at CERN
• Radiative dark matter and neutrino masses from an alternative $U(1{)}_{B-L}$ gauge symmetry
• Energizing gamma ray bursts via $Z^{\prime }$ mediated neutrino heating
• First Evaluation of Meson and $\tau$ lepton Spectra and Search for Heavy Neutral Leptons at ILC Beam Dump
• Searching for hidden sector in multiparticle production at the LHC
• Explaining $g_{\mu }-2$ and $R_{K^{(\ast )}}$ using the light mediators of $U(1{)}_{T3R}$
• Leptonic neutral-current probes in a short-distance DUNE-like setup
• Looking forward to inelastic DM with electromagnetic form factors at FASER and beam dump experiments
• Searching Dark Photons using displaced vertices at Belle II -- with backgrounds
• Freeze-in sterile neutrino dark matter in a feebly gauged $B-L$ model
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• On the collider-testability of the type-I seesaw model with 3 right-handed neutrinos
• The Revival of $U(1{)}_{L_e-L_{\mu }}$: A Natural Solution for $(g-2{)}_{\mu }$ with a Sub-GeV Dark Matter
• Phenomenology of a two-component dark matter model
• Hyperon production in quasielastic ${\bar{\nu }}_{\tau }-$nucleon scattering
• Probing an intrinsically flavorful ALP via tau-lepton flavor physics
• String (gravi)photons, "dark brane photons", holography and the hypercharge portal
• Freeze-in production of sterile neutrino dark matter in a gauged U$(1{)}^{\prime }$ model with inverse seesaw
• Asymmetries in Extended Dark Sectors: A Cogenesis Scenario
• No Hiding in the Dark: Cosmological Bounds on Heavy Neutral Leptons with Dark Decay Channels
• Leptogenesis in GeV scale seesaw models
• Discovering the Origin of Neutrino Masses at SHiP
• A chiral gauge-invariant model for Majorana neutrinos
• Particle dispersion in the classical vector dark matter background
• Prospects for Heavy Neutral Lepton Searches at Short and Medium Baseline Reactor Experiments
• Exploring sub-GeV Dark Matter Physics with Cosmic Ray and Future Telescopes
• Freeze-in dark matter in EDGES 21-cm signal
• Anomalous U(1) Gauge Bosons and String Physics at the Forward Physics Facility
• Dark Matter phenomenology : from simplified WIMP models to refined alternative solutions
• Production of GeV-scale heavy neutral leptons in 3-body decays. Comparison with the PYTHIA approach
• Production of Chern-Simons bosons in decays of mesons
• Self-interacting dark matter as a solution to the problems in small-scale structures
• Neutrinophilic two Higgs doublet model with $U(1)$ global symmetry
• New Particles at the Z-Pole: Tera-Z factories as discovery and precision machines
• Right handed neutrino production from $Z^{\prime }$ interactions in forward search experiments
• Sterile neutrino rates for general $M$, $T$, $\mu$, $k$: review of a theoretical framework
• Probing Solar Heavy Neutrinos with Heliospheric Electrons
• Same-Sign Taus Signatures of Maximally Flavor-Violating Scalars at the LHC
• Looking forward to forward physics at the CERN's LHC
• Reconciling resonant leptogenesis and baryogenesis via neutrino oscillations
• Search for a light Higgs boson in single-photon decays of ${\rm Y}(1S)$ using ${\rm Y}(2S)\to {\pi }^{+}{\pi }^{-}{\rm Y}(1S)$ tagging method
• LHC experiments for long-lived particles of the dark sector
• Leptogenesis Constraints on $B-L$ breaking Higgs Boson in TeV Scale Seesaw Models
• The SHiP experiment and the RPC technology
• Search for Axion(-like) Particles in Heavy-Ion Collisions
• Summary and Outlook: 2015 Lepton-Photon Symposium
• Probing the mixing between sterile and tau neutrinos in the SHiP experiment
• Beyond Standard Neutrino Theory
• TeV Scale Leptogenesis
• Review of Neutral Naturalness
• Invisible neutron decay and light BSM particles
• Sub-GeV dark matter and multi-decay signatures from dark showers at beam-dump experiments
• Report on the ECFA Early-Career Researchers Debate on the 2020 European Strategy Update for Particle Physics
• Search for hidden particles in intensity frontier experiment SHiP
• The dual King relation
• Factorizing Hidden Particle Production Rates
• Exploring the Null Results in the Direct Detection Experiments, $(g-2{)}_{\ell }$ and Neutrino Mass in an Extended $U(1{)}_{L_{\mu }-L_{\tau }}$ Model Constrained through the $Z\to {\ell }^{+}{\ell }^{-}$ Decays
• Light Dark Matter Showering under Broken Dark $U(1)$ -- Revisited
• Heavy Neutrinos at Future Colliders
• PREFACE: A search for long-lived particles at the Large Hadron Collider
• Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee
• New physics particles mixing with mesons: production in the fragmentation chain
• The Forward Physics Facility at the High-Luminosity LHC
• Techniques for mass peak reconstruction in Searches for Long-Lived Heavy Neutral Leptons Decaying to a Lepton and a \(ρ\) Meson
• Vector dark matter production during inflation in the gradient-expansion formalism
• Long-Lived HNLs via ALP Portal at the LHC
• Positivity and partial wave unitarity bounds on ALP theories via amplitude methods
• High-resolution tracking in a GEM-Emulsion detector
• Flashes of Hidden Worlds at Colliders
• QCD and High Energy Interactions: Moriond 2015 Theory Summary
• Indirect detection of long-lived particles in a rich dark sector with a dark vector portal
• Status and Perspectives of Neutrino Physics
• Search for sterile neutrino with light gauge interactions: recasting collider, beam-dump, and neutrino telescope searches
• Neutrino Mixing via the Neutrino Portal
• Structure Formation Limits on Axion-Like Dark Matter
• Lepton number symmetry as a way to testable leptogenesis
• Open Issues in Neutrino Reactions
• Rare b-hadron decays as probe of new physics
• New Technologies for Discovery
• The SHiP experiment at CERN
• Muon Beam Dump Experiments probe five-dimensional nature of $U(1{)}_{L_{\mu }-L_{\tau }}$
• Probing the Chern-Simons Portal at the HL-LHC through Displaced Vertices from W Boson Associated Production
• The detectors of the SHiP experiment at CERN
• Gauged $U(1)$ Clockwork
• Probing the muon $g-2$ with future beam dump experiments
• Probing the Seesaw Mechanism and Leptogenesis with the International Linear Collider
• Axion Electrodynamics in Strong Magnetic Backgrounds
• SND@LHC: The Scattering and Neutrino Detector at the LHC
• Light scalars in neutron star mergers
• Di-decay signature of new physics particles at intensity frontier experiments
• Constraints on the parameters of the neutrino extension of the Standard Model
• Dark photon searches via Higgs boson production at the LHC and beyond
• Fingerprints of freeze-in dark matter in an early matter-dominated era
• Heavy neutrino searches from MeV to TeV
• Neutrino flavor mixing with approximate $\mu$-$\tau$ symmetry within the low-scale minimal linear seesaw model
• Direct Detection and Cosmological Constraints of Dark Matter with Dark Dipoles
• Design of a Helium Passivation System for the Target Vessel of the Beam Dump Facility at CERN
• Background studies for the CODEX-b experiment: measurements and simulation
• Axion-like particles from soft supersymmetry breaking
• Searches for Power-Law Warped Extra Dimensions
• Loop-Level Lepton Flavor Violation and Diphoton Signals in the Minimal Left-Right Symmetric Model
• Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos