378 citations · 531 across the 3 of their papers we have counts for
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hep-ex2006★ 152 cited
An Improved Limit on Invisible Decays of Positronium
A. Badertscher, P. Crivelli, W. Fetscher +6
The results of a new search for positronium decays into invisible final states are reported. Convincing detection of this decay mode would be a strong evid ence for new physics bey…
hep-ex2004★ 1 cited
A new experiment to search for the invisible decay of the orthopositronium
A. Badertscher, P. Crivelli, W. Fetscher +4
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 . Evidence for this d…
hep-ex2003
An apparatus to search for mirror dark matter via the invisible decay of orthopositronium in vacuum
A. Badertscher, A. Belov, P. Crivelli +9
Mirror matter is a possible dark matter candidate. It is predicted to exist if parity is an unbroken symmetry of the vacuum. The existence of the mirror matter, which in addition t…