YN scattering data: CL67
The experiment:
Elastic Λ p events have been recorded in an exposure of the
LRL 25-inch bubble chamber to a K- beam at the Bevatron.
The chamber was filled both with hydrogen and deuterium.
78 elastic events have been recorded.
The data:
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Λ p → Λ p
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total elastic cross section (SGT)
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momentum range number of SGT [mb]
[MeV/c] events
400 - 700 14.0 +/- 3.5
700 - 1000 15.5 +/- 3.5
1000 - 1300 17.0 +/- 4.0
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F/B ratio
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momentum range number of F/B
[MeV/c] events
200 - 400 0.66 +/- 0.44
400 - 700 1.19 +/- 0.41
700 - 1000 1.15 +/- 0.35
1000 - 1300 1.33 +/- 0.49
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P/E ratio
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momentum range number of P/E
[MeV/c] events
200 - 400 0.68 +/- 0.42
400 - 700 1.32 +/- 0.46
700 - 1000 1.70 +/- 0.54
1000 - 1300 1.67 +/- 0.25
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Notes:
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The numbers were taken from PDG (read from a graph).
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The total cross sections were normalized to previous
Λ p scattering experiments and do not include
the 30% normalization uncertainty.
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The Λ polarization has been determined: 0.11 +/- 0.3 (from
events 0.4 - 1.3 GeV/c)
for all events. PDG: it is not clear whether the authors report the
polarization or the polarization times the Λ decay asymmetry
paramater.
