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28 April 2017

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YN scattering data: CH70

Authors: G.R. Charlton, J. Badier, E. Barrelet, I. Makarovisch, J. Pernegr, J.R. Hubbard, A. Leveque, C. Louedec, L. Moscoso, D. Revel
Reference: Phys. Lett. 32B (1970), 720
Group: Saclay

The experiment:

The CERN 2m bubble chamber was exposed to a beam of 3.95 GeV/c K- mesons. 303 hyperon-proton interactions were seen between 0.5 and 4.0 GeV/c. They were recorded in the same double scan which detected the primary beam interactions. Elastic as well as inelastic scatters were detected.

The data:

Λ p → Λ p total elastic cross section (SGT)
momentum range      number of      SGT [mb]
    [MeV/c]          events

  500 - 1000           20       22.2 +/- 5.0
 1000 - 1500           21       12.9 +/- 2.8
 1500 - 2000           37       22.0 +/- 3.6
 2000 - 2500           28       16.1 +/- 3.1
 2500 - 3000           12       11.0 +/- 3.2
 3000 - 4000           13       12.5 +/- 3.4
Λ p → Σ0 p total cross section (SGT)
momentum range      number of      SGT [mb]
    [MeV/c]          events

  660 - 4000           11        1.5 +/- 0.5
Σ+ p → Σ+ p total cross section (SGT)
momentum range      number of      SGT [mb]
    [MeV/c]          events

  500 - 1500           10       31.2 +/- 10.1
 1500 - 2500            8       18.7 +/-  6.6
 2500 - 4000            4       15.3 +/-  7.8
Σ- p → Σ- p total cross section (SGT)
momentum range      number of      SGT [mb]
    [MeV/c]          events

  500 - 1500            6       13.2 +/-  4.7
 1500 - 2500           11       13.9 +/-  4.1
 2500 - 4000            4        7.5 +/-  3.6
Ξ- p → Ξ- p total cross section (SGT)
momentum range      number of      SGT [mb]
    [MeV/c]          events

 1000 - 4000            6       13   +/-  6
Ξ0 p → Ξ0 p total cross section (SGT)
momentum range      number of      SGT [mb]
    [MeV/c]          events

 1000 - 4000            4       19   +/- 10

Notes:


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