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22 August 2017

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Σ- p scattering data

This is a list of all Σ- p scattering data that are known to us. Apart from the elastic channel, the Σ- p system couples also to two inelastic hyperon-nucleon channels:

Σ- p Σ- p
Σ0 n
Λ n

This list gives the observables per channel, where the tables are made per observable. These measurements are ordered on their momentum range.

Σ- p → Σ- p Total elastic cross-section
 momentum range      number of         SGT (mb)   reference
    (MeV/c)           events

   100 -  1900           6        10    + 6 - 4     ST61
   125 -   165          25       166    +/-  33     RU67
   130 -   140          14       184    +/-  52     EI71
   135 -   145                   207    +/-  85     DO66
   140 -   145          19       152    +/-  38     EI71
   145 -   150          30       146    +/-  30     EI71
   145 -   155                   198    +/-  48     DO66
   150 -   155          49       142    +/-  25     EI71
   155 -   160          81       164    +/-  32     EI71
   155 -   165                   189    +/-  32     DO66
   160 -   165         107       138    +/-  19     EI71
   165 -   170         106       113    +/-  16     EI71
   500 -  1500           6        13.2  +/-   4.7   CH70
  1500 -  2500          11        13.9  +/-   4.1   CH70
  2500 -  4000           4         7.5  +/-   3.8   CH70
 
Differential cross-sections
DO66
based on 130 events in the range 135 - 165 MeV/c

    cos(theta)       DSG(mb)

  -0.4 -  -0.2     90 +/-  20
  -0.2 -   0.0    105 +/-  20
   0.0 -   0.2     80 +/-  20
   0.2 -   0.4    120 +/-  20
   0.4 -   0.6    115 +/-  25
   0.6 -   0.8    200 +/- 110
EI71
based on 236 events in the range 150 - 170 MeV/c

    cos(theta)       DSG(mb)

  -0.5 -  -0.4     37 +/- 29
  -0.4 -  -0.2     57 +/- 14
  -0.2 -   0.0     77 +/- 14
   0.0 -   0.2     75 +/- 13
   0.2 -   0.4     72 +/- 12
   0.4 -   0.6     91 +/- 16
KO00
based on 30 events in the range 400 - 700 MeV/c

   cos(theta)       DSG(mb)

 -0.5 -  -0.2      0.3   +1.8 -0.7 (stat.)  +/- 0.1 (syst.)
 -0.2 -   0.1      3.0   +1.5 -1.1 (stat.)  +/- 0.3 (syst.)
  0.1 -   0.4      3.4   +1.5 -1.1 (stat.)  +/- 0.3 (syst.)
  0.4 -   0.7      3.7   +1.9 -1.4 (stat.)  +/- 0.3 (syst.)
Σ- p → Σ0 n Total cross-section
 momentum range      number of         SGT (mb)   reference
    (MeV/c)           events

   105 -   115       )           395    +/-  95     EN66
   115 -   125       )           160    +/-  40     EN66
   125 -   135       ) 171       160    +/-  30     EN66
   135 -   145       )           125    +/-  25     EN66
   145 -   155       )           110    +/-  20     EN66
   155 -   165       )           115    +/-  15     EN66
Σ-p → Λ n Total cross-section
 momentum range      number of         SGT (mb)   reference
    (MeV/c)           events

   105 -   115       )           170    +/-  50     EN66
   115 -   125       )           170    +/-  45     EN66
   125 -   135       ) 240       140    +/-  30     EN66
   135 -   145       )           160    +/-  30     EN66
   145 -   155       )           140    +/-  20     EN66
   155 -   165       )           115    +/-  15     EN66
Differential cross-section
EN66
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

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