Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee

Abstract

In the search for beyond the Standard Model (SM) physics, long-lived particles (LLPs) have emerged as potential candidates and are being explored in various ongoing experiments. Future lepton colliders, such as the FCC-ee, shall provide an excellent opportunity to probe LLPs, owing to their clean environment and improved particle identification. This study investigates the potential of the proposed \textbf{I}nnovative \textbf{D}etector for an \textbf{E}lectron-Positron \textbf{A}ccelerator (IDEA) detector at FCC-ee in the detection of LLPs produced from $B$-meson and Higgs boson decays. We explore benchmark scenarios for different final states resulting from LLP decays, including a detailed analysis of the SM long-lived hadronic background. Additionally, we propose dedicated LLP detectors with different configurations, dimensions, and locations with respect to the IDEA detector. DELIGHT B, originally proposed as a dedicated LLP detector for the FCC-hh, stands out as the detector with the maximum efficiency for detecting LLPs produced at FCC-ee. We find that cylindrical detector configurations, if feasible to construct around the IDEA detector, would also enhance sensitivity for LLPs mostly decaying outside it.

arXiv comment92 pages, 51 figures, 35 tables; version published in PRD

References in corpus (150)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• An Introduction to PYTHIA 8.2
• DELPHES 3, A modular framework for fast simulation of a generic collider experiment
• A Theory of Dark Matter
• Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
• HDECAY: a Program for Higgs Boson Decays in the Standard Model and its Supersymmetric Extension
• Theories with Gauge-Mediated Supersymmetry Breaking
• Secluded WIMP Dark Matter
• Freeze-In Production of FIMP Dark Matter
• The Physics of Heavy Z' Gauge Bosons
• Minimal Dark Matter
• Supersymmetric Unification Without Low Energy Supersymmetry And Signatures for Fine-Tuning at the LHC
• Inelastic Dark Matter
• A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case
• Long-Lived Particles at the Energy Frontier: The MATHUSLA Physics Case
• Exotic Decays of the 125 GeV Higgs Boson
• FASER's Physics Reach for Long-Lived Particles
• Mini-Split
• Study of the decay K+ => pi+,nu,nubar in the momentum region 140<Ppi<199 MeV/c
• Experimental Signatures of Low Energy Gauge Mediated Supersymmetry Breaking
• Dark Matter Self-Interactions and Light Force Carriers
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• Evidence for nu_mu -> nu_e Oscillations from Pion Decay in Flight Neutrinos
• Searching for Long-lived Particles: A Compact Detector for Exotics at LHCb
• New measurement of the K+ => pi+,nu,nubar branching ratio
• A taste of dark matter: Flavour constraints on pseudoscalar mediators
• Split Supersymmetry
• Light and Heavy Dark Matter Particles
• Decay and Detection of a Light Scalar Boson Mixing with the Higgs
• HDECAY: Twenty++ Years After
• The Present and Future Status of Heavy Neutral Leptons
• A Heavy Gluino as the Lightest Supersymmetric Particle
• Heavy neutrino searches at the LHC with displaced vertices
• SIMP Spectroscopy
• Massive Doublet Leptons
• Search for hidden-sector bosons in $B^0\to K^{\ast 0}{\mu }^{+}{\mu }^{-}$ decays
• Measurement of the very rare $K^{+}\to {\pi }^{+}\nu \bar{\nu }$ decay
• Mass Bounds on a Very Light Neutralino
• CEPC Technical Design Report -- Accelerator (v2)
• Search for long-lived scalar particles in $B^{+}\to K^{+}\chi ({\mu }^{+}{\mu }^{-})$ decays
• Discovering Inelastic Thermal-Relic Dark Matter at Colliders
• Freeze-In Dark Matter with Displaced Signatures at Colliders
• Triplet Scalars and Dark Matter at the LHC
• Multilepton and Lepton Jet Probes of Sub-Weak-Scale Right-Handed Neutrinos
• How Dark Are Majorana WIMPs? Signals from MiDM and Rayleigh Dark Matter
• Dark Higgs Bosons at FASER
• Signatures of long-lived gluinos in split supersymmetry
• Search for long-lived particles that decay into final states containing two electrons or two muons in proton-proton collisions at sqrt(s) = 8 TeV
• Detecting Gluino-Containing Hadrons
• Heavy neutral fermions at the high-luminosity LHC
• Interactions of Heavy Stable Hadronizing Particles
• Coannihilation without chemical equilibrium
• Search for long-lived, weakly interacting particles that decay to displaced hadronic jets in proton-proton collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• LHC-friendly minimal freeze-in models
• Lepton Number Violation in Higgs Decay at LHC
• A Stealth Supersymmetry Sampler
• Expression of Interest for the CODEX-b Detector
• Searches for Decays of New Particles in the DUNE Multi-Purpose Near Detector
• Search for disappearing tracks in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Stopping Gluinos
• Long-Lived Neutralino NLSPs
• 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
• Probing the scotogenic FIMP at the LHC
• Shedding Light on Neutrino Masses with Dark Forces
• Light Scalars and the KOTO Anomaly
• Long-lived TeV-scale right-handed neutrino production at the LHC in gauged $U(1{)}_X$ model
• Phenomenology of GeV-scale scalar portal
• Majorana Higgses at colliders
• Pure Gravity Mediation of Supersymmetry Breaking at the LHC
• Long-lived Sterile Neutrinos at the LHC in Effective Field Theory
• Search for massive long-lived particles decaying semileptonically in the LHCb detector
• Long-Lived Fermions at AL3X
• Interactions of Coloured Heavy Stable Particles in Matter
• A supersymmetric solution to the KARMEN time anomaly
• FACET: A new long-lived particle detector in the very forward region of the CMS experiment
• The Coannihilation Codex
• Search for new particles decaying to a jet and an emerging jet
• Searches for Long-Lived Particles at the Future FCC-ee
• An analysis of a Heavy Gluino LSP at CDF : The Heavy Gluino Window
• Updated search for long-lived particles decaying to jet pairs
• Displaced heavy neutrinos from $Z^{\prime }$ decays at the LHC
• Search for ${\pi }^0$ decays to invisible particles
• Extra Higgs Boson and $Z^{\prime }$ as Portals to Signatures of Heavy Neutrinos at the LHC
• Search for Long-Lived Particles in $e^{+}{e}^{-}$ Collisions
• Search for long-lived particles using displaced jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Blast from the past II: Constraints on heavy neutral leptons from the BEBC WA66 beam dump experiment
• Blast from the past: Constraints on the dark sector from the BEBC WA66 beam dump experiment
• Search for Dark Photons with the FASER detector at the LHC
• Search for a Higgs portal scalar decaying to electron-positron pairs in the MicroBooNE detector
• Search for long-lived particles in final states with displaced dimuon vertices in $pp$ collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector
• Interplay of super-WIMP and freeze-in production of dark matter
• Light Fermionic WIMP Dark Matter with Light Scalar Mediator
• 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
• Constraints on light scalars from PS191 results
• LSND Constraints on the Higgs Portal
• Search for long-lived, massive particles in events with a displaced vertex and a muon with large impact parameter in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Probing the seesaw mechanism at the 250 GeV ILC
• Clockworking FIMPs
• Search for Higgs-like bosons decaying into long-lived exotic particles
• 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
• Dark Higgs Bosons at Colliders
• Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for displaced vertices of oppositely charged leptons from decays of long-lived particles in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• R-parity Violation and Light Neutralinos at ANUBIS and MAPP
• Physics with Far Detectors at Future Lepton Colliders
• R-Parity Violation and Light Neutralinos at SHiP and the LHC
• Simplified models of dark matter with a long-lived co-annihilation partner
• Looking for Minimal Inverse Seesaw scenarios at the LHC with Jet Substructure Techniques
• Fat Jet Signature of a Heavy Neutrino at Lepton Collider
• Search for long-lived particles using delayed photons in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Inelastic Dark Matter at the LHC
• Search for long-lived particles decaying in the CMS endcap muon detectors in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• HECATE: A long lived particle detector concept for the FCC-ee or CEPC
• Long Live the Higgs Factory: Higgs Decays to Long-Lived Particles at Future Lepton Colliders
• Mapping the material in the LHCb vertex locator using secondary hadronic interactions
• Search for long-lived particles decaying to leptons with large impact parameter in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Higgs portal to dark matter and $B\to K^{(\ast )}$ decays
• Signatures of sneutrino dark matter in an extension of the CMSSM
• Measuring a Light Neutralino Mass at the ILC: Testing the MSSM Neutralino Cold Dark Matter Model
• Heavy stable charged tracks as signatures of non-thermal dark matter at the LHC : a study in some non-supersymmetric scenarios
• Long-lived stau, sneutrino dark matter and right-slepton spectrum
• Search for long-lived particles decaying into muon pairs in proton-proton collisions at $\sqrt{s}=$ 13 TeV collected with a dedicated high-rate data stream
• Long-lived neutral fermions at the DUNE near detector
• Heavy Majorana neutrino pair production from $Z^{\prime }$ at hadron and lepton colliders
• Study of energy deposition patterns in hadron calorimeter for prompt and displaced jets using convolutional neural network
• Search for exotic decays of the Higgs boson into long-lived particles in $pp$ collisions at $\sqrt{s}=13$ TeV using displaced vertices in the ATLAS inner detector
• Heavy Neutral Leptons at the Electron-Ion Collider
• Near or Far Detectors? Optimizing Long-Lived Particle Searches at Electron-Positron Colliders
• 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
• Probing Long-lived Particles at Higgs Factories
• Cornering Compressed Gluino at the LHC
• Search for a long-lived spin-0 mediator in $b\to s$ transitions at the Belle II experiment
• Naturally split supersymmetry
• Determining the lifetime of long-lived particles at the HL-LHC
• Long-Lived Light Mediators from Higgs boson Decay at HL-LHC, FCC-hh and a Proposal of Dedicated LLP Detectors for FCC-hh
• Exploring the potential of FCC-hh to search for particles from $B$ mesons
• Novel signatures for long-lived particles at the LHC
• Search for long-lived particles decaying to $e^{\pm }{\mu }^{\mp }\nu$
• Sensitivity of the FACET experiment to Heavy Neutral Leptons and Dark Scalars
• Searching for Metastable Particles with Sub-Millimeter Displaced Vertices at Hadron Colliders
• Search for long-lived particles decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Search for long-lived particles produced in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Searching for exotic B meson decays with the CMS L1 track trigger
• Long live The NMSSM!
• Interplay of inert doublet and vector-like lepton triplet with displaced vertices at the LHC/FCC and MATHUSLA
• Search for long-lived particles decaying to final states with a pair of muons in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV
• Probing light sterile neutrinos in left-right symmetric models with displaced vertices and neutrinoless double beta decay
• SHIFT@LHC: Searches for New Physics with Shifted Interaction on a Fixed Target at the Large Hadron Collider
• Boosted displaced decay of right-handed neutrinos at CMS, ATLAS and MATHUSLA
• Searching for long-lived dark scalars at the FCC-ee