Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1996-04-25
Phys.Scripta 56 (1997) 321-324
Physics
Nuclear Physics
Nuclear Theory
9 pages (latex: elsart.sty) + 3 figures (PostScript gzip+uuencode) Submitted to Phys.Lett.B
Scientific paper
10.1088/0031-8949/56/4/001
The total cross section for the near threshold eta production in proton-proton collisions has been investigated with the assumption that the production mechanism is due to the emission of a meson x (pi, eta, sigma) from one of the nucleons followed by a x N --> eta N transition on the second one. The x N --> eta N amplitudes are generated from the unitary multi-channel multi-resonance model which has recently been constructed in analyzing the pi N scattering and pi N --> eta N reaction. The initial and final pp distortions are calculated from a coupled-channel pi-NN model which describes the NN scattering data up to about 2 GeV. With the x-NN vertex functions taken from the Bonn potential, the predicted total cross sections of threshold pp --> eta pp reaction are in good agreement with the data. In contrast to previous works, we find that the eta-exchange plays an important role. The effect of the two-pion exchange, simulated by sigma- exchange, is found to be significant but not as dominant as the vector meson-exchange introduced in previous works.
Batinic Mijo
Lee T. S. -H.
Švarc Alfred
No associations
LandOfFree
Near threshold eta production in proton-proton 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 Near threshold eta production in proton-proton collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near threshold eta production in proton-proton collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-385666