Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1996-07-11
Acta Phys.Polon.B27:2893-2910,1996
Physics
Nuclear Physics
Nuclear Theory
15 pages, 10 figures, contribution to the workshop MESON96, Cracow, Poland, 10-14 May 1996
Scientific paper
A brief overview on recent model calculations for near threshold pion production in nucleon-nucleon collisions is given. Results from our own investigations of the reactions $pp \rightarrow pp\pi ^0$ and $pn \rightarrow d\pi^0$ are presented. Direct production, heavy meson exchange and pion rescattering are taken into account. For the latter a T-matrix obtained from a microscopic model of the $\pi N$ interaction is employed. We obtain a significant contribution from rescattering, but not enough to describe the data for $pp \to pp\pi^0$. The missing production rate can be provided by heavy meson exchanges. For the first time the effect of off--shell rescattering is investigated for the reaction $pn \rightarrow d\pi^0$. Isoscalar rescattering in combination with isovector rescattering is able to describe the s-wave production data. We confirm that heavy meson exchanges are negligible in this reaction.
Haidenbauer Johann
Hanhart Ch.
Speth Josef
No associations
LandOfFree
Threshold meson production in nucleon-nucleon collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Threshold meson production in nucleon-nucleon collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Threshold meson production in nucleon-nucleon collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-65386