2009/06/03 by James D. Bjorken, Rouven Essig, Philip Schuster +1 · 1 citation
Physics and Astronomy · #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.80.075018
published as Phys.Rev.D80:075018,2009 · 14 pages + 6 page appendix and refs, 11 figures
arxiv created 2009/06/03 · arxiv updated 2009/12/01
Fixed-target experiments are ideally suited for discovering new MeV-GeV mass U(1) gauge bosons through their kinetic mixing with the photon. In this paper, we identify the production and decay properties of new light gauge bosons that dictate fixed-target search strategies. We summarize existing limits and suggest five new experimental approaches that we anticipate can cover most of the natural parameter space, using currently operating GeV-energy beams and well-established detection methods. Such experiments are particularly timely in light of recent terrestrial and astrophysical anomalies (PAMELA, FERMI, DAMA/LIBRA, etc.) consistent with dark matter charged under a new gauge force.