Quark fragmentation and off-diagonal helicity density matrix elements for vector meson production

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dc.creatorAnselmino, M.
dc.creatorBertini, M.
dc.creatorMurgia, F.
dc.creatorQuintairos, P.
dc.date1998-10-02
dc.date.accessioned2026-07-07T04:05:17Z
dc.date.available2026-07-07T04:05:17Z
dc.descriptionAs 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.
dc.description3 pages, LaTeX, no figures, uses sprocl.sty. Talk delivered by F. Murgia at the XIII International Symposium on High Energy Spin Physics (SPIN98), September 8-12, 1998, Protvino, Russia
dc.identifierhttps://arxiv.org/abs/hep-ph/9810226
dc.identifierhttp://arxiv.org/abs/hep-ph/9810226
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/48358
dc.subjectHigh Energy Physics - Phenomenology
dc.titleQuark fragmentation and off-diagonal helicity density matrix elements for vector meson production
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