dorsal/arxiv
View SchemaQuarkonium Formation Time in a Model-Independent Approach
| Authors | D. Kharzeev, R. L. Thews |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9907021 |
| URL | https://arxiv.org/abs/nucl-th/9907021 |
| DOI | 10.1103/PhysRevC.60.041901 |
| Journal | Phys.Rev. C60 (1999) 041901 |
Abstract
We use dispersion relations to reconstruct, in a model-independent way, the formation dynamics of heavy quarkonium from the experimental data on e+ e- annihilation to Q-bar Q. We extract a distribution of formation times with a mean value for the J/psi, tau{J/psi} = 0.44 fm; and for the Upsilon, tau{Upsilon} = 0.32 fm. The corresponding widths of these distributions are given by Delta-tau{J/psi} = 0.31 fm and Delta-tau{Upsilon} = 0.28 fm. This information can be used as an input in modeling of heavy quarkonium production on nuclear targets.
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"abstract": "We use dispersion relations to reconstruct, in a model-independent way, the\nformation dynamics of heavy quarkonium from the experimental data on e+ e-\nannihilation to Q-bar Q. We extract a distribution of formation times with a\nmean value for the J/psi, tau{J/psi} = 0.44 fm; and for the Upsilon,\ntau{Upsilon} = 0.32 fm. The corresponding widths of these distributions are\ngiven by Delta-tau{J/psi} = 0.31 fm and Delta-tau{Upsilon} = 0.28 fm. This\ninformation can be used as an input in modeling of heavy quarkonium production\non nuclear targets.",
"arxiv_id": "nucl-th/9907021",
"authors": [
"D. Kharzeev",
"R. L. Thews"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.60.041901",
"journal_ref": "Phys.Rev. C60 (1999) 041901",
"title": "Quarkonium Formation Time in a Model-Independent Approach",
"url": "https://arxiv.org/abs/nucl-th/9907021"
},
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