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:
-
Corrections have been applied for the loss of proton recoils shorter than
1 cm in elastic Λ p scattering.
-
Total cross sections are also determined for other Λ p
reactions: Λ p → Λ p π and
Λ p π π.
-
The total Λ p cross section has been estimated.
