Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-10-02
Physics
High Energy Physics
High Energy Physics - Phenomenology
3 pages, LaTeX, no figures, uses sprocl.sty. Talk delivered by F. Murgia at the XIII International Symposium on High Energy Sp
Scientific paper
As confirmed by some recent LEP data on phi, K^* and D^*0 production, final state interactions in quark fragmentation 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: we give estimates for rho_{1,-1} of vector mesons with a large x_E and collinear with the parent jet, relating its size and sign to the associated hard constituent dynamics. We mention possible non-zero values of rho_{1,-1} in several other processes.
Anselmino Mauro
Bertini Marc
Murgia Francesco
Quintairos Paulo
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