2004/04/28 by A. Badertscher, P. Crivelli, Badertscher, A. +13
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Quantum Mechanics and Applications #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0404037
Based on a talk given at Workshop on Positronium Physics, Zurich, Switzerland, 30-31 May 2003
arxiv created 2004/04/28 · openalex publication_date 2004/04/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confidence sensitivity in the branching ratio as low as 10-8. Evidence for this decay mode would unambigously signal new physics: either the existence of extra--dimensions or fractionally charged particles or new light gauge bosons. The experimental approach and the detector components of the proposed experiment are described.