Quarkonium Feed-Down and Sequential Suppression
High Energy Physics - Phenomenology
2009-11-07 v2 High Energy Physics - Lattice
Abstract
About 40-50 % of the quarkonium ground states J/psi(1S) and Upsilon(1S) produced in hadronic collisions originate from the decay of higher excitations. In a hot medium, these higher states are dissociated at lower temperatures than the more tightly bound ground states, leading to a sequential suppression pattern. Using new finite temperature lattice results, we specify the in-medium potential between heavy quarks and determine the dissociation points of different quarkonium states. On the basis of recent CDF data on bottomonium production, we then obtain first predictions for sequential Upsilon suppression in nuclear collisions.
Cite
@article{arxiv.hep-ph/0106017,
title = {Quarkonium Feed-Down and Sequential Suppression},
author = {S. Digal and P. Petreczky and H. Satz},
journal= {arXiv preprint arXiv:hep-ph/0106017},
year = {2009}
}
Comments
19 pages, LaTeX, 11 figures