The Reaction anti-p p ---> anti-Lambda Lambda in the meson exchange picture

Haidenbauer, J.; Hippchen, T.; Holinde, K.; Holzenkamp, B.; Mull, V.; Speth, J.

doi:10.1103/PhysRevC.45.931

The Reaction anti-p p ---> anti-Lambda Lambda in the meson exchange picture

J. Haidenbauer
(
- Adelaide U.
)
,
T. Hippchen
(
- Julich, Forschungszentrum
)
,
K. Holinde
(
- Julich, Forschungszentrum
)
,
B. Holzenkamp
(
- Julich, Forschungszentrum
)
,
V. Mull
(
- Julich, Forschungszentrum
)

Oct 25, 1991

47 pages

Published in:

Phys.Rev.C 45 (1992) 931-946

DOI:

10.1103/PhysRevC.45.931

Report number:

KFA-IKP-TH-1991-31

View in:

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Abstract: (APS)

A study of the strangeness production process p¯p→Λ¯Λ at threshold and intermediate energies has been performed doing a full coupled-channel (p¯p,Λ¯Λ) calculation. The elastic part of the p¯p and Λ¯Λ interactions has been derived from a one-boson-exchange version of the Bonn NN potential and a corresponding extension to the hyperon-nucleon case whereas the annihilation part is taken into account by introducing suitable optical potentials. The transition interaction between p¯p and Λ¯Λ is based on K- and K*-meson exchange. A reasonably good description of empirical cross sections as well as polarization data is achieved. It is demonstrated that the results are quite sensitive even to short-range modifications of the channel interactions. We also compare our model with other approaches and suggest a new experiment which would be able to check the very different predictions of the meson-exchange and constituent quark model, respectively.

anti-p p: annihilation
annihilation: anti-p p
Lambda: pair production
pair production: Lambda
meson: exchange
exchange: meson
partial wave analysis: coupled channel
differential cross section: angular dependence
angular dependence: differential cross section
analyzing power

References(43)

Figures(0)

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,
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