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24 October 2017

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Λ p scattering data

This is a list of all Λ p scattering data that are known to us with a final state consisting of a hyperon and a nucleon. Apart from the elastic channel, the Λ p system couples also to two inelastic hyperon-nucleon channels:
Λ pΛ p
Σ0 p
Σ+ n
This list gives the observables per channel, where the tables are made per observable. These measurements are ordered on their momentum range.
Λ p → Λ p The list is divided into tables with the same observables. Observables for elastic Λ p scattering that have been measured are: Some papers present their results in two ways (different momentum bins). In such cases we have arbitrarily chosen one. For more details, follow the links to the given references.
Total elastic cross-section
 momentum range      number of         SGT (mb)   reference
    (MeV/c)           events

   120 -   150          34       212    +/-  36     AL68
   120 -   150          14       209    +/-  58     SE68
   150 -   180          48       141    +/-  20     AL68
   150 -   180          28       177    +/-  38     SE68
   150 -   400          11        34    +/-  10     PI64
   150 -   600           6        22    +/-  10     GR63
   180 -   210          80       141    +/-  16     AL68
   180 -   210          49       153    +/-  27     SE68
   200 -   400                    24.0  +/-   5.0   KA71
   210 -   240          88        95    +/-  10     AL68
   210 -   240          54       111    +/-  18     SE68
   240 -   270          92        81    +/-   8     AL68
   240 -   270          59        87    +/-  13     SE68
   270 -   320          36        56    +/-   9     AL68
   270 -   330          20        46    +/-  11     SE68
   300 -   400                    17.2  +/-   8.6   HA77
   400 -   500                    26.9  +/-   7.8   HA77
   400 -   600                     9.0  +/-   2.0   KA71
   400 -   638           7        24.7  +/-   9.3   AL61
   400 -   700                    14.0  +/-   3.5   CL67
   400 -  1500                    42    +/-  16     AR62
   500 -   600                     7.0  +/-   4.0   HA77
   500 -  1000           4        40    +/-  20     CR59
   500 -  1000          20        22.2  +/-   5.0   CH70
   500 -  1200          86        25    +/-   4     BE64
   600 -   700                    16.5  +/-   3.5   KA71
   600 -   700                     9.0  +/-   4.0   HA77
   600 -  1500          20        19    +/-   5     GR63
   639 -  1000           7        20.4  +/-   7.7   AL61
   700 -   800                    10.8  +/-   2.7   KA71
   700 -   800                    13.6  +/-   4.5   HA77
   700 -  1000                    15.5  +/-   3.5   CL67
   800 -   900                    10.2  +/-   2.7   KA71
   800 -   900                    11.3  +/-   3.6   HA77
   900 -  1000                     9.0  +/-   2.7   KA71
   900 -  1000                    11.3  +/-   3.8   HA77
  1000 -  1100                    21.1  +/-   4.8   HA77
  1000 -  1200                    13.0  +/-   2.4   KA71
  1000 -  1300                    17.0  +/-   4.0   CL67
  1000 -  1500          21        12.9  +/-   2.8   CH70
  1000 -  2000          22        22.3  +/-   5.8   AN75
  1000 -  2250          25        12    +/-   4     BA67
  1100 -  1200                    14.0  +/-   3.4   HA77
  1200 -  1300                     9.6  +/-   2.9   HA77
  1200 -  1400                    11.5  +/-   2.6   KA71
  1300 -  1400                    13.5  +/-   3.4   HA77
  1400 -  1500                    26.0  +/-   4.8   HA77
  1400 -  1600                    12.0  +/-   3.2   KA71
  1500 -  1600                    16.4  +/-   3.7   HA77
  1500 -  2000          37        22.0  +/-   3.6   CH70
  1500 -  2500                    30    +/-  15     AR62
  1500 -  3900          12        15    +/-   4     VI66
  1600 -  1700                    15.9  +/-   4.1   HA77
  1600 -  1800                    13.0  +/-   3.8   KA71
  1700 -  1800                    23.5  +/-   5.0   HA77
  1800 -  1900                    23.3  +/-   6.0   HA77
  1800 -  2000                    15.5  +/-   8.6   KA71
  1900 -  2000                    19.8  +/-   4.4   HA77
  2000 -  2100                    20.1  +/-   5.6   HA77
  2000 -  2500          28        16.1  +/-   3.1   CH70
  2000 -  3000          16        16.3  +/-   4.8   AN75
  2100 -  2200                    16.3  +/-   4.5   HA77
  2200 -  2300                    17.6  +/-   5.1   HA77
  2250 -  3500          27         9    +/-   3     BA67
  2300 -  2400                    18.0  +/-   4.8   HA77
  2400 -  2500                     9.6  +/-   3.4   HA77
  2500 -  3000          12        11.0  +/-   3.2   CH70
  2600 -  3600                    15.3  +/-   1.5   HA77
  3000 -  4000          13        12.5  +/-   3.4   CH70
  3000 -  4000          12        14.4  +/-   4.8   AN75
  3500 -  5000           8         9    +/-   4     BA67
  3600 -  4900                    11.4  +/-   1.3   HA77
  4000 -  5000           7         7.7  +/-   3.2   AN75
  4900 -  6900                     8.6  +/-   1.2   HA77
  5000 -  6000           4         6.2  +/-   3.3   AN75
  6000 - 17000           8         4.1  +/-   1.6   AN75
  6900 - 10000                     6.5  +/-   1.2   HA77
F/B ratio
 momentum range      number of            F/B
     (MeV/c)          events

   180 -   210          80         1.01 +/-   0.24  AL68
   180 -   248                     0.9  +/-   0.2   SE68
   210 -   240          88         1.27 +/-   0.28  AL68
   240 -   270          92         1.29 +/-   0.27  AL68
   248 -   330                     1.8  +/-   0.4   SE68
   270 -   320          36         1.55 +/-   0.53  AL68
   200 -   400                     0.66 +/-   0.44  CL67
   400 -   700                     1.19 +/-   0.41  CL67
   700 -  1000                     1.15 +/-   0.35  CL67
  1000 -  1300                     1.33 +/-   0.49  CL67

P/E ratio

 momentum range      number of            P/E
     (MeV/c)          events

   180 -   210          80         0.87 +/-   0.22  AL68
   210 -   240          88         0.79 +/-   0.19  AL68
   240 -   270          92         1.12 +/-   0.24  AL68
   270 -   320          36         0.99 +/-   0.34  AL68
   200 -   400                     0.68 +/-   0.42  CL67
   400 -   700                     1.32 +/-   0.46  CL67
   700 -  1000                     1.70 +/-   0.54  CL67
  1000 -  1300                     1.67 +/-   0.25  CL67
Angular distribution
SE68
angular distribution average  over the range 180 - 248 MeV/c

      cos(theta)        number of events
    -1.0  -  -0.75        20.0 +/- 4.0
    -0.75 -  -0.5         25.0 +/- 5.0
    -0.5  -  -0.25        32.0 +/- 6.0
    -0.25 -   0.0         23.4 +/- 5.0
     0.0  -   0.25        22.0 +/- 4.0
     0.25 -   0.5         25.5 +/- 4.6
SE68
angular distribution averaged over the range 248 - 330 MeV/c

      cos(theta)        number of events
    -1.0  -  -0.75         7.8 +/- 3.3
    -0.75 -  -0.5          9.3 +/- 3.3
    -0.5  -  -0.25         7.5 +/- 3.1
    -0.25 -   0.0         11.1 +/- 3.5
     0.0  -   0.25        23.4 +/- 4.0
     0.25 -   0.5         22.0 +/- 4.0
     0.5  -   0.75        25.0 +/- 6.6
Λ p → Σ0 p Total elastic cross-section
 momentum range      number of         SGT (mb)   reference
    (MeV/c)           events

   639 -  1000           3         8.5  +/-   4.9   AL61
   640 -   800                     8.0  +/-   4.0   HA77
   650 -   700                     2.8  +/-   2.0   KA71
   660 -  4000          11         1.5  +/-   0.5   CH70
   700 -   800                     7.5  +/-   2.5   KA71
   800 -   900                    10.6  +/-   3.0   KA71
   800 -  1000                     8.5  +/-   3.0   HA77
   900 -  1000                     5.0  +/-   2.0   KA71
  1000 -  1200                     3.5  +/-   1.5   KA71
  1000 -  1200                     6.8  +/-   2.5   HA77
  1200 -  1400                     3.8  +/-   1.7   KA71
  1200 -  1500                     4.8  +/-   2.0   HA77
  1400 -  1600                     2.8  +/-   1.7   KA71
  1500 -  2500                     1.5  +/-   1.0   HA77
  1600 -  2000                     4.8  +/-   3.4   KA71
Λ p → Σ+ n Total elastic cross-section
 momentum range      number of         SGT (mb)   reference
    (MeV/c)           events

   740 -   800           2        30    +/-  20     CR59

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