Search for an exotic three-body decay of orthopositronium

Details Search for an exotic three-body decay of orthopositronium Search for an exotic three-body decay of orthopositronium

2002-06-21

arxiv.org/abs/hep-ex/0206054v1

Phys.Lett.B542:29-34,2002

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 3 figures

Scientific paper

10.1016/S0370-2693(02)02237-2

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 < 4.4 \times 10^{-5} (at the 90% confidence level), for the photon energy in the range from 40 keV < E_gamma< 400 keV and for mass values in the kinematical range 0 < mX1+mX2 <900 keV. This result unambiguously excludes the o-Ps -> gamma + X1 + X2 decay mode as the origin of the discrepancy.

Affiliated with

Also associated with

No associations

Rating

Search for an exotic three-body decay of orthopositronium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Search for an exotic three-body decay of orthopositronium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for an exotic three-body decay of orthopositronium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-255765