Possible solution of the J/psi production puzzle
High Energy Physics - Phenomenology
2008-11-26 v2 High Energy Physics - Experiment
Nuclear Theory
Abstract
We argue that the s-channel cut contribution to J/psi hadroproduction can be significantly larger than the usual cut contribution of the color-singlet mechanism, which is known to underestimate the experimental measurements. A scenario accounting for intermediate interactions is proposed that reproduces the data at low- and mid-range transverse momenta P_T from the Fermilab Tevatron and BNL Relativistiv Heavy Ion Collider. The J/psi produced in this manner are polarized predominantly longitudinally.
Keywords
Cite
@article{arxiv.0709.3471,
title = {Possible solution of the J/psi production puzzle},
author = {H. Haberzettl and J. P. Lansberg},
journal= {arXiv preprint arXiv:0709.3471},
year = {2008}
}
Comments
4 pages, 4 figures; version (with minor text revisions) as published in PRL