Search for a Dark Photon in Electro-Produced $e^{+}{e}^{-}$ Pairs with the Heavy Photon Search Experiment at JLab

Abstract

The Heavy Photon Search experiment took its first data in a 2015 engineering run at the Thomas Jefferson National Accelerator Facility, searching for a prompt, electro-produced dark photon with a mass between 19 and 81 MeV/$c^2$. A search for a resonance in the $e^{+}{e}^{-}$ invariant mass distribution, using 1.7 days (1170 nb${}^{-1}$) of data, showed no evidence of dark photon decays above the large QED background, confirming earlier searches and demonstrating the full functionality of the experiment. Upper limits on the square of the coupling of the dark photon to the Standard Model photon are set at the level of 6$\times 10^{-6}$. Future runs with higher luminosity will explore new territory.

References in corpus (32)

• Asymptotic formulae for likelihood-based tests of new physics
• Final Report of the Muon E821 Anomalous Magnetic Moment Measurement at BNL
• A Theory of Dark Matter
• New Measurement of the Electron Magnetic Moment and the Fine Structure Constant
• The Low-Energy Frontier of Particle Physics
• Secluded U(1) below the weak scale
• Reevaluation of the Hadronic Contributions to the Muon g-2 and to alpha(MZ)
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
• New determination of the fine structure constant and test of the quantum electrodynamics
• Astrophysical Signatures of Secluded Dark Matter
• Tenth-Order QED Contribution to the Electron g-2 and an Improved Value of the Fine Structure Constant
• Trial factors for the look elsewhere effect in high energy physics
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Search for a new gauge boson in the $A^{\prime }$ Experiment (APEX)
• Non-Abelian Dark Sectors and Their Collider Signatures
• LHC Signals for a SuperUnified Theory of Dark Matter
• New Limits on Hidden Photons from Past Electron Beam Dumps
• Probing Dark Forces and Light Hidden Sectors at Low-Energy e+e- Colliders
• Search for light massive gauge bosons as an explanation of the $(g-2{)}_{\mu }$ anomaly at MAMI
• Searching for the light dark gauge boson in GeV-scale experiments
• Kinetic Mixing as the Origin of Light Dark Scales
• Search for dark photons produced in 13 TeV $pp$ collisions
• Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon -> gamma A0
• Limit on the production of a light vector gauge boson in phi meson decays with the KLOE detector
• Abelian Hidden Sectors at a GeV
• Light spin-1/2 or spin-0 Dark Matter particles
• Search for a vector gauge boson in phi meson decays with the KLOE detector
• Dark Side of Higgs Diphoton Decays and Muon g-2
• Dark Force Detection in Low Energy e-p Collisions
• The Heavy Photon Search beamline and its performance
• The HPS electromagnetic calorimeter

Cited by in corpus (26)

• Physics Beyond Colliders at CERN: Beyond the Standard Model Working Group Report
• The Dark Photon
• Feebly-Interacting Particles:FIPs 2020 Workshop Report
• Search for $A^{\prime }\to {\mu }^{+}{\mu }^{-}$ decays
• Dense Nuclear Matter Equation of State from Heavy-Ion Collisions
• The Search for Feebly-Interacting Particles
• Precision tests of fundamental physics with $\eta$ and ${\eta }^{\prime }$ mesons
• Searching in the dark: the hunt for the dark photon
• Searches for dark photons at accelerators
• A fresh look at ALP searches in fixed target experiments
• Kinetic Mixing and Portal Matter Phenomenology
• $Z^{\prime }$ Mediated WIMPs: Dead, Dying, or Soon to be Detected?
• Laser pulse-length effects in trident pair production
• Dark Photons and Displaced Vertices at the MUonE Experiment
• New Thermal Relic Targets for Inelastic Vector-Portal Dark Matter
• Lepton Phenomenology of Stueckelberg Portal to Dark Sector
• Dark Matter Freeze-out via Catalyzed Annihilation
• Searching for Prompt and Long-Lived Dark Photons in Electro-Produced $e^{+}{e}^{-}$ Pairs with the Heavy Photon Search Experiment at JLab
• MeV Dark Matter with MeV Dark Photons in Abelian Kinetic Mixing Theories
• Sensitivity of the ${\eta }^{(\prime )}\to {\pi }^0\gamma \gamma$ and ${\eta }^{\prime }\to \eta \gamma \gamma$ decays to a sub-GeV leptophobic $U(1{)}_B$ boson
• Dark photons from pions produced in ultraperipheral $PbPb$ collisions
• Heavy $Z^{\prime }$ Bosons in the Secluded $U(1{)}^{\prime }$ Model at Hadron Colliders
• Constraints on Kinetic Mixing of Dark Photons from Dilepton Spectra
• New Physics Searches via Beam Normal Spin Asymmetry in Bhabha Scattering
• Primer on Detectors and Electronics for Particle Physics Experiments
• The Dark Photon: a 2026 Perspective