Status of sub-GeV Hidden Particle Searches

Details Status of sub-GeV Hidden Particle Searches Status of sub-GeV Hidden Particle Searches

2010-08-26

arxiv.org/abs/1008.4519v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, contribution to 6th Patras Workshop on Axions, WIMPs and WISPs, Zurich University, Switzerland, 5-9 July 2

Scientific paper

Hidden sector particles with sub-GeV masses like hidden U(1) gauge bosons, the NMSSM CP-odd Higgs, and other axion-like particles are experimentally little constrained as they interact only very weakly with the visible sector. For masses below the muon threshold, we present constraints from meson decays, g - 2 as well as beam-dump and reactor experiments. The NMSSM CP-odd Higgs and generally any pseudoscalar is required to be heavier than 210 MeV or couple to fermions much weaker than the SM Higgs. Hidden photons are less constrained and can be searched for at future fixed-target experiments, e.g. HIPS at DESY.

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