| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1845256 | Nuclear Physics B - Proceedings Supplements | 2007 | 5 Pages |
Abstract
The upgraded Collider Detector at Fermilab (CDF II) has a high bandwidth available for track based triggers. This capability, in conjunction with an integrated luminosity in excess of 1 fb−1, enables detailed studies of charm hadron production. CDF is now releasing first measurements of the prompt charm meson pair cross-sections, which give access to QCD mechanisms by which charm quarks are produced in proton anti-proton collisions. Recent results on the spin alignment of J/ψ and ψ(2S) as well as on the relative production of the χc1(P1) and χc2(1P) challenge our understanding of the fragmentation of charm quarks into charmonium states.
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