Conveners
Low-energy Direct Searches for Dark Photons
- Rouven Essig (Stony Brook University)
James Beacham
(New York University)
11/06/2014, 11:20
APEX is a fixed target experiment in Experimental Hall A at Thomas Jefferson National Accelerator Facility (JLab) in Virginia, USA, that is designed to search for a new gauge boson (A') with sub-GeV mass and coupling to ordinary matter of g'/e ~ (1 - 10^-4). Electrons impinge upon a fixed target of high-Z material to produce an A' via a process analogous to photon bremsstrahlung. The A' then...
John A Jaros
(SLAC National Accelerator Laboratory)
11/06/2014, 11:40
HPS is an new experiment at Jefferson Laboratory designed to look for hidden sector photons in the mass range 20 - 1000 MeV with couplings a'/a in the range 10-5 to 10-10. Presently under construction, HPS will be installed this fall in Hall B at JLab, commission thereafter, and take data in 2015. Heavy photons are identified as invariant mass bumps and as separated decay verticies. The...
Michael Distler
(University Mainz, Germany)
11/06/2014, 12:00
The A1 collaboration at the Mainz Microtron has concluded a pilot study in 2011 and data taking periods in 2012/2013 to search for a dark photon. The focus of the experiment was on the mass range between 50-200 MeV where dark matter provides a possible explanation for the discrepancy in the anomalous magnetic moment of the muon (g-2). The analysis is finished and the final exclusion limits...
