May 29, 2018 to June 3, 2018
Hyatt Regency Indian Wells Conference Center
US/Pacific timezone

The APEX Experiment at Jefferson Lab: A Search for a New Vector Boson

May 30, 2018, 6:30 PM
East Foyer | Larkspur/Mesquite Rooms (Hyatt Regency Indian Wells Conference Center)

East Foyer | Larkspur/Mesquite Rooms

Hyatt Regency Indian Wells Conference Center

44600 Indian Wells Lane, Indian Wells, CA 92210, USA
Parallel DM DM / PPHI


Dr Seamus Riordan (Argonne National Laboratory)


The A' Experiment, or APEX, aims to search for a new vector boson that kinetically mixes with the photon, a "dark photon" or a "heavy photon", with a mass of $\mathcal O$(100 MeV) by studying the invariant mass spectrum of $e^+e^-$ pairs produced from an electron beam on a high-Z target. Dark photons appear in many well-motivated extensions of the Standard Model and may mediate interactions between dark matter and ordinary matter. APEX will extend current constraints on the mixing parameter by a factor of a few for dark photon masses near 100 MeV. APEX is scheduled to take data at Jefferson Lab in early 2019, taking advantage of the high duty-factor electron beam and using the twin symmetric high resolution spectrometers in Hall A. An overview of the current constraints for such a boson and experimental plans will be presented.
E-mail [email protected]
Collaboration name APEX Collaboration
Funding source Work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract number DE-AC02-06CH11357.

Primary author

Dr Seamus Riordan (Argonne National Laboratory)

Presentation materials