Probing MeV Dark Matter at Low--Energy $e^{+}{e}^{-}$ Colliders

Abstract

It has been suggested that the annihilation of Dark Matter particles χwith mass between 0.5 and 20 MeV into e^+e^- pairs could be responsible for the excess flux of 511 keV photons coming from the central region of our galaxy that has been detected by the IINTEGRAL satellite. The simplest way to achieve the required cross section for χpair annihilation while respecting existing constraints is to introduce a new vector boson U with mass M_U below a few hundred MeV. In this Letter we point out that over most of the allowed parameter space, the process e^+e^- to U γ, followed by the decay of U into either an e^+e^- pair or into an invisible (ν\bar νor χ\bar χ) channel, should lead to signals that can be detected by the B-factory experiments BaBar and Belle. A smaller, but still substantial, region of parameter space can also be probed at the Φfactory DAFNE.

4 pages, revtex with equation.sty (included), 2 embedded postscript figures. Minor changes, added a couple of references; version to appear in PRL

References in corpus (16)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Particle Dark Matter: Evidence, Candidates and Constraints
• Largest temperature of the radiation era and its cosmological implications
• Scalar Dark Matter candidates
• Big Bang nucleosynthesis and physics beyond the Standard Model
• MeV Dark Matter: Has It Been Detected?
• Early SPI/INTEGRAL measurements of galactic 511 keV line emission from positron annihilation
• Gamma-Ray Constraint on Galactic Positron Production by MeV Dark Matter
• Early SPI/INTEGRAL contraints on the morphology of the 511 keV line emission in the 4th galactic quadrant
• Light spin-1/2 or spin-0 Dark Matter particles
• Improved ${\alpha }^4$ Term of the Electron Anomalous Magnetic Moment
• MeV-mass dark matter and primordial nucleosynthesis
• Constraints on the parity-violating couplings of a new gauge boson
• Dark Matter Annihilation: the origin of cosmic gamma-ray background at 1-20 MeV
• More evidence in favour of Light Dark Matter particles?

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