We report on a direct search for a three-body decay of the orthopositronium into a photon and two penetrating particles, o-Ps -> gamma + X1 + X2. The existence of this decay could explain the discrepancy between the measured and the predicted values of the orthopositronium decay rate. From the analysis of the collected data a single candidate event is found, consistent with the expected background. This allows to set an upper limit on the branching ratio gamma + X1 + X2 decay mode as the origin of the discrepancy
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
The experimental setup and results of the first search for invisible decays of orthopositronium (o-P...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
An exotic annihilation of ${\rm e}^{+}{\rm e}^{-}$ at rest into a single γ and a weakly interacting ...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
In models of Randall-Sundrum type orthopositronium (o-Ps) can disappear due to tunnelling into addit...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
The experimental setup and results of the first search for invisible decays of orthopositronium (o-P...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
We report on a direct search for a three-body decay of the orthopositronium into a photon and two pe...
An exotic annihilation of ${\rm e}^{+}{\rm e}^{-}$ at rest into a single γ and a weakly interacting ...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
We propose an experiment to search for invisible decays of orthopositronium (o-Ps) with a 90% confid...
In models of Randall-Sundrum type orthopositronium (o-Ps) can disappear due to tunnelling into addit...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
17 pages, 7 figures, added references, fixed limit on millicharged particles and changed two plots a...
The experimental setup and results of the first search for invisible decays of orthopositronium (o-P...