Nuclear Physics Seminars

ics Nuclear
Tuesday, February 26, 2013
3:30 PM
Physics Building, Room 204
Narbe Kalantarians [Host: Donal Day]
Hampton University
"A Search For Dark Forces At The Jefferson Lab Free Electron Laser"
 Slideshow (PDF)
Recent theories of dark matter predict A’ gauge bosons in the mass range of 0.01-10 GeV that couple to charged fermions with a strength of α’/αΕΜ~ 10-4 of the photon or less. The DarkLight (Detecting A Resonance Kinematically with eLectrons Incident on a Gaseous Hydrogen Target) experiment intends to use the 1 MW 100 MeV electron beam at the Jefferson Lab Free Electron Laser incident on a 1019 H2/cm2 thick target to study the process e- + p -> e- + p +e- + e+. A dark force particle would show up as a narrow resonance in the radiated e+ - e- system. DarkLight would explore the A’ mass region 10-100 MeV with sensitivity to couplings as low as a’/aEM ~10-7 with 1/ab of data.

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