Off-diagonal Helicity Density Matrix Elements for Vector Mesons Produced at LEP
High Energy Physics - Phenomenology
2011-09-13 v1
Abstract
Final state quark-antiquark interactions may give origin to non zero values of the off-diagonal element rho_{1,-1} of the helicity density matrix of vector mesons produced in e+e- annihilations, as confirmed by recent OPAL data on phi and D^*'s. Predictions are given for rho_{1,-1} of several mesons produced at large z and small p_T, i.e. collinear with the parent jet; the values obtained for phi and D^* are in agreement with data.
Cite
@article{arxiv.hep-ph/9704420,
title = {Off-diagonal Helicity Density Matrix Elements for Vector Mesons Produced at LEP},
author = {Mauro Anselmino and Marc Bertini and Francesco Murgia and Paulo Quintairos},
journal= {arXiv preprint arXiv:hep-ph/9704420},
year = {2011}
}
Comments
LaTeX, 12 pages, no figures