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The Heavy Photon Search experiment at Jefferson Laboratory

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arxiv 1505.02025 v1 pith:IGKNXLVC submitted 2015-05-08 physics.ins-det hep-ex

classification physics.ins-dethep-ex
keywords searchexperimentheavyphotonwilljeffersonlaboratoryvertexing
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abstract

The Heavy Photon Search experiment (HPS) at Jefferson Laboratory will search for a new $U(1)$ massive gauge boson, or "heavy-photon," mediator of a new fundamental interaction, called "dark-force," that couples to ordinary photons trough kinetic mixing. HPS has sensitivity in the mass range 20 MeV - 1 GeV and coupling $\varepsilon^2$ between 10$^{-5}$ and 10$^{-10}$. The HPS experiment will search for the $e^+e^-$ decay of the heavy photon, by resonance search and detached vertexing, in an electron beam fixed target experiment. HPS will use a compact forward spectrometer, which employs silicon microstrip detectors for vertexing and tracking, and a PbWO$_4$ electromagnetic calorimeter for energy measurement and fast triggering.

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  1. Phases of Dark Matter from Inverse Decays

    hep-ph 2025-04 conditional novelty 5.0 of 10

    Dark matter produced by the freeze-out of inverse decays has a full phase structure, with couplings as small as m_chi over the Planck mass, that is robust to kinetic decoupling and testable through dark photon searches.

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