• • • We do not use the following data for averages, fits, limits, etc. • • • |
$<10^{-8}$ |
|
1 |
|
SPEC |
$\pm{}$ |
|
0 |
2 |
|
CNTR |
$\pm{}$ |
1
NAKAMURA 1989 is KEK experiment with 12 GeV protons on Pt target. The limit applies for mass ${ {}\lesssim{} }$ $1.6$ GeV and lifetime ${ {}\gtrsim{} }$ $10^{-7}~$s.
|
2
BUSSIERE 1980 is CERN-SPS experiment with 200$-$240 GeV protons on ${}^{}\mathrm {Be}$ and ${}^{}\mathrm {Al}$ target. See their figures 6 and 7 for cross-section ratio vs mass.
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