Pion emission in 2H, 12C, 27Al, gamma pi+ reactions at threshold
Nuclear Experiment
2008-11-26 v2
Abstract
The first data from MAX-lab in Lund, Sweden on pion production in photonuclear reactions at threshold energies, is presented. The decrease of the total yield of pi+ in gamma + 12C, 27Al reactions below 200 MeV as well as differential, dsigma/dOmega, cross sections follow essentially predictions from an intranuclear cascade model with an attractive potential for pion-nucleus interaction in its simplest form. Double differential, d2sigma/dOmegadT, cross sections at 176 MeV show, however, deviations from the model, which call for refinements of nuclear and Coulomb potentials and possibly also for coherent pion production mechanisms.
Keywords
Cite
@article{arxiv.0801.1498,
title = {Pion emission in 2H, 12C, 27Al, gamma pi+ reactions at threshold},
author = {P. Golubev and V. Avdeichikov and K. G. Fissum and B. Jakobsson and I. A. Pshenichnov and W. J. Briscoe and G. V. O'Rielly and J. Annand and K. Hansen and L. Isaksson and H. Jaederstrom and M. Karlsson and M. Lundin and B. Schroeder and L. Westerberg},
journal= {arXiv preprint arXiv:0801.1498},
year = {2008}
}
Comments
19 pages, 7 figures