Gluon Fragmentation to Dj Quarkonia and Test of Color-octet Production Mechanism
نویسندگان
چکیده
We report the recent progress in the studies of D-wave heavy quarkonia production from gluon fragmentation at the Tevatron and in Z decays, and the D-wave charmonia production in B decays. We show that the color-octet contributions are of crucial importance to the production of D-wave quarkonia. Signals, as strong as that for J/ψ and ψ′, should be seen for the D-wave charmonium in the processes. These will provide a test of the color-octet production mechanism.
منابع مشابه
Color-octet quarkonia production.
Gluon fragmentation represents the dominant source of high energy prompt quarkonia at hadron colliders. Fragmentation approximations break down, however, when a quarkonium’s transverse momentum becomes comparable to its mass. In this paper, we identify a large class of color-octet diagrams that mediate quarkonia production at all energies and reduce to the dominant set of gluon fragmentation gr...
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