Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1995-03-04
Phys.Lett.B351:574-578,1995
Physics
High Energy Physics
High Energy Physics - Experiment
a LaTeX file (text 7 pages) and a uuencoded gz-compressed PostScript file (text 7 pages + figures 4 pages)
Scientific paper
10.1016/0370-2693(95)00425-K
We have searched for an exotic decay of orthopositronium into a single photon and a short-lived neutral boson in the hitherto unexplored mass region above 900 ${\rm keV}/{\it c}^{2}$, by noting that this decay is one of few remaining candidates which could explain the discrepancy of the orthopositronium decay-rate. A high-resolution measurement of the associated photon energy spectrum was carried out with a germanium detector to search for a sharp peak from this two-body decay. Our negative result provides the upper-limits of\mbox{ }$2.0 \times 10^{-4}$ on the branching ratio of such a decay in the mass region from 847 to 1013 ${\rm keV}/{\it c}^{2}$, and excludes the possibility of this decay mode explaining the discrepancy in the orthopositronium decay-rate.
Fujikawa Mari
Kataoka Jun
Maeno Toshiaki
Nishihara Yoshitaka
Orito S.
No associations
LandOfFree
A search for massive neutral bosons in orthopositronium decay 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 A search for massive neutral bosons in orthopositronium decay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A search for massive neutral bosons in orthopositronium decay will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-688972