Extra dimensions and invisible decay of orthopositronium

Details Extra dimensions and invisible decay of orthopositronium Extra dimensions and invisible decay of orthopositronium

2003-02-23

arxiv.org/abs/hep-ph/0302205v1

Phys.Rev. D67 (2003) 075012

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.67.075012

We point out that some models with infinite additional dimension(s) of Randall-Sundrum type predict the disappearance of orthopositronium (o-Ps) into additional dimension(s). The experimental signature of this effect is the o-Ps -> invisible decay of orthopositronium which may occur at a rate within three orders of magnitude of the present experimental upper limit. This result enhances existing motivations for a more sensitive search for this decay mode and suggests additional directions for testing extra dimensions in non accelerator experiments.

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