We have measured excitation functions for the d+p->3He+X, (X=pi0, eta) channels near the eta production threshold. The data were taken during a slow ramping of the COSY internal deuteron beam scattered on a proton target. The excitation function for the reaction d+p->3He+pi0 does not show any structure which could originate from the decay of 3He-eta bound state. We measured also the threshold excitation curve for the d+p->3He+X process, however, contrary to the SATURNE results, we observe no cusp near the eta threshold.
@article{arxiv.nucl-ex/0612009,
title = {Study of the 3He-eta system in d-p collisions},
author = {J. Smyrski and H. -H. Adam and A. Budzanowski and E. Czerwinski and R. Czyzykiewicz and D. Gil and D. Grzonka and M. Janusz and L. Jarczyk and B. Kamys and A. Khoukaz and P. Klaja and P. Moskal and W. Oelert and C. Piskor-Ignatowicz and J. Przerwa and J. Ritman and T. Rozek and T. Sefzick and M. Siemaszko and A. Taeschner and P. Winter and M. Wolke and P. Wuestner and W. Zipper},
journal= {arXiv preprint arXiv:nucl-ex/0612009},
year = {2008}
}
Comments
Talk given at 18th International IUPAP Conference on Few-Body Problems in Physics, 21-26 August, 2006, Santos, Brazil, 4 pages, 6 figures, will be published in Nuclear Physics A