Protoninduced Pion-, Eta- and Kaon-Production at Threshold
| dc.creator | Kleefeld, F. | |
| dc.creator | Dillig, M. | |
| dc.date | 1998-11-02 | |
| dc.date.accessioned | 2026-07-07T05:42:42Z | |
| dc.date.available | 2026-07-07T05:42:42Z | |
| dc.description | We present some details of our recent theoretical investigations on the total cross section of the reactions $pp\to pp π^0$, $pp\to pp η$ and $pp\to pΛK^+$ at threshold. Applying standard nonrelativistic perturbation theory within the framework of meson exchange models (MEC) to all of the investigated processes we observe that theory is still far--off from a quantitative understanding of the existing data, although the qualitative behaviour of the threshold cross sections can be reproduced. The often quoted $η^2$--dependence of the $pp\to pp π^0$ cross section at threshold is due to a calculational mistake of Koltun and Reitan (1966) and not based on theoretical grounds, where threebody phasespace behaviour would yield $η^4$, which can be affected by final state and short range effects. To respect the high momentum transfers for $pp\to pp η$ and $pp\to pΛK^+$ relativistic models were developed. Hereby the $η$--production still is based on MEC, while the $K^+$ production was investigated in the quark-gluon-picture based on the Bethe--Salpeter formalism. | |
| dc.description | 4 pages; contribution to BARYONS98, Bonn, Germany, September 1998 | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9811003 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9811003 | |
| dc.identifier | Proc. 8th Int. Conf. on the Structure of Baryons (Baryons '98), 22-26.9.1998, Bonn, Germany, p. 613-616 (Eds. D.W. Menze, B. Metsch, ISBN 981-02-3865-7, (c) 1999 by World Scientific Publishing Co. Pte. Ltd.) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/83031 | |
| dc.subject | Nuclear Theory | |
| dc.title | Protoninduced Pion-, Eta- and Kaon-Production at Threshold | |
| dc.type | text |