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24 October 2017

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YN scattering data: EN66

Authors: R. Engelmann, H. Filthuth, V. Hepp, E. Kluge
Reference: Phys. Lett. 21 (1966), 587
Group: Heidelberg

The experiment:

In the Saclay 81 cm Hydrogen Bubble Chamber which was exposed to a beam of K- mesons from the Proton-Synchroton at CERN. Reactions of the produced Σ- particles were studied. 200000 pictures were scanned. 489 events were recorded.

The data:

Σ- p → Σ0 n total cross section (SGT)
momentum range      number of     SGT [mb]
    [MeV/c]          events

  105 - 115         )           395 +/- 95
  115 - 125         )           160 +/- 40
  125 - 135         ) 171       160 +/- 30
  135 - 145         )           125 +/- 25
  145 - 155         )           110 +/- 20
  155 - 165         )           115 +/- 15
Σ- p → Λ n total cross section (SGT)
momentum range      number of     SGT [mb]
    [MeV/c]          events

  105 - 115         )           170 +/- 50
  115 - 125         )           170 +/- 45
  125 - 135         ) 240       140 +/- 30
  135 - 145         )           160 +/- 30
  145 - 155         )           140 +/- 20
  155 - 165         )           115 +/- 15
differential cross section (DSG)
based on 289 events in the range 100 - 170 MeV/c

   cos(theta)       DSG [mb]

 -1.0 -  -0.8     75 +/- 15
 -0.8 -  -0.6     80 +/- 15
 -0.6 -  -0.4     65 +/- 15
 -0.4 -  -0.2     60 +/- 12
 -0.2 -   0.0     90 +/- 17
  0.0 -   0.2     70 +/- 14
  0.2 -   0.4     60 +/- 12
  0.4 -   0.6     96 +/- 17
  0.6 -   0.8     85 +/- 15
  0.8 -   1.0     85 +/- 15
differential cross section (DSG)
based on 144 events in the range 150 - 170 MeV/c

   cos(theta)       DSG [mb]

 -1.0 -  -0.8     45 +/- 13
 -0.8 -  -0.6     55 +/- 16
 -0.6 -  -0.4     38 +/- 13
 -0.4 -  -0.2     60 +/- 18
 -0.2 -   0.0     79 +/- 20
  0.0 -   0.2     60 +/- 17
  0.2 -   0.4     40 +/- 15
  0.4 -   0.6     80 +/- 20
  0.6 -   0.8    105 +/- 25
  0.8 -   1.0     95 +/- 20

  These events are included in the events of the
  previous table!

Notes:


http://nn-online.org 24 October 2017 info@nn-online.org