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The Heavy Photon Search experiment at Jefferson Laboratory

Author:
De Napoli, Marzio   Giardina, G.   Eidelman, S.   Venanzoni, G.   Battaglieri, M.   Mandaglio, G.   


Journal:
EPJ Web of Conferences


Issue Date:
2015


Abstract(summary):

Many beyond Standard Model theories predict a new massive gauge boson, aka "dark" or "heavy photon", directly coupling to hidden sector particles with dark charge. The heavy photon is expected to mix with the Standard Model photon through kinetic mixing and therefore couple weakly to normal charge. The Heavy Photon Search (HPS) experiment will search for the heavy photon at the Thomas Jefferson National Accelerator Facility (JLab), in the mass range 20-1000 MeV/c(2) and coupling to electric charge is an element of(2) =3D alpha'/alpha in the range 10(-5) to 10(-10). HPS will look for the e(+)e(-) decay channel of heavy photons radiated by electron Bremsstrahlung, employing both invariant mass search and detached vertexing techniques. The experiment employs a compact forward spectrometer comprising silicon microstrip detectors for vertexing and tracking and an electromagnetic calorimeter for particle identification and triggering.


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