dorsal/arxiv
View SchemaThe Role of Gluons in Dilepton Production from the Quark-Gluon Plasma
| Authors | Ziwei Lin, C. M. Ko |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9910023 |
| URL | https://arxiv.org/abs/nucl-th/9910023 |
| DOI | 10.1016/S0375-9474(99)00833-7 |
| Journal | Nucl.Phys. A671 (2000) 567-582 |
Abstract
We study high mass dilepton production from gluon-induced processes, $g q \to q \gamma^*$, $g \bar q \to \bar q \gamma^*$, and $g g \to q \bar q \gamma^*$, in a thermally equilibrated but chemically under-saturated partonic matter that is expected to be created in the initial stage of ultra-relativistic heavy ion collisions. Regulating the divergence in these processes by the thermal quark mass, we find that gluon-induced processes are more important than the leading-order $q\bar q$ annihilation process as a result of the larger number of gluons than quarks in the partonic matter. The dependence of the thermal dilepton yield from the partonic stage of heavy ion collisions on the initial conditions for the partonic matter is also studied. We further discuss the feasibility of observing thermal dileptons from the quark-gluon plasma in heavy ion experiments.
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"abstract": "We study high mass dilepton production from gluon-induced processes, $g q \\to\nq \\gamma^*$, $g \\bar q \\to \\bar q \\gamma^*$, and $g g \\to q \\bar q \\gamma^*$,\nin a thermally equilibrated but chemically under-saturated partonic matter that\nis expected to be created in the initial stage of ultra-relativistic heavy ion\ncollisions. Regulating the divergence in these processes by the thermal quark\nmass, we find that gluon-induced processes are more important than the\nleading-order $q\\bar q$ annihilation process as a result of the larger number\nof gluons than quarks in the partonic matter. The dependence of the thermal\ndilepton yield from the partonic stage of heavy ion collisions on the initial\nconditions for the partonic matter is also studied. We further discuss the\nfeasibility of observing thermal dileptons from the quark-gluon plasma in heavy\nion experiments.",
"arxiv_id": "nucl-th/9910023",
"authors": [
"Ziwei Lin",
"C. M. Ko"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(99)00833-7",
"journal_ref": "Nucl.Phys. A671 (2000) 567-582",
"title": "The Role of Gluons in Dilepton Production from the Quark-Gluon Plasma",
"url": "https://arxiv.org/abs/nucl-th/9910023"
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