%0 Journal Article
%T Helicity Signatures in Subthreshold rho Production on Nuclei
%A G. J. Lolos
%A G. M. Huber
%A A. Shinozaki
%A Z. Papandreou
%A E. J. Brash
%A K. Hossain
%A M. Iurescu
%A D. Nordin
%A G. Garino
%A K. Maruyama
%A K. Maeda
%A T. Suda
%A A. Toyofuku
%A A. Sasaki
%A H. Yamashita
%J Physics
%D 2001
%I arXiv
%X We report a helicity analysis of subthreshold rho production on 2H and 12C nuclei at low photoproduction energies and large |t|. The results are indicative of a large longitudinal rho polarization (l=1, m=0) and are consistent with a strong helicity-flip mechanism of rho production. The analysis is model-independent and supports the large mass shift reported from the earlier 3He experiments.
%U http://arxiv.org/abs/nucl-ex/0103013v1