dorsal/arxiv
View SchemaOpen Charm Production and its Lepton Pair Signal in High Energy Nuclear Collisions
| Authors | Ziwei Lin |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9609056 |
| URL | https://arxiv.org/abs/nucl-th/9609056 |
Abstract
Open charm production at the initial and the pre-equilibrium stages in nuclear collisions is studied. The pre-equilibrium contribution to open charm production in $A+A$ collisions at $\sqrt s=200 AGeV$ is shown to be very sensitive to correlations between momenta and space-time coordinates of the minijets produced after the initial collision. A minimal correlation model based on the uncertainty principle is introduced, and leads only to a small pre-equilibrium charm yield as compared with initial yields. Opposite-sign lepton pairs $ee, e\mu$ and $\mu\mu$ from open charm decay in $p+A$ reactions at $\sqrt s=200$ AGeV are proposed as a measure of nuclear shadowing effects. Via an approximate scaling, the ratio of the spectra from $p+A$ collisions to those from $pp$ collisions is shown to reflect the shadowing function well. Finally it is shown that the required measurements are feasible at RHIC.
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"abstract": "Open charm production at the initial and the pre-equilibrium stages in\nnuclear collisions is studied. The pre-equilibrium contribution to open charm\nproduction in $A+A$ collisions at $\\sqrt s=200 AGeV$ is shown to be very\nsensitive to correlations between momenta and space-time coordinates of the\nminijets produced after the initial collision. A minimal correlation model\nbased on the uncertainty principle is introduced, and leads only to a small\npre-equilibrium charm yield as compared with initial yields. Opposite-sign\nlepton pairs $ee, e\\mu$ and $\\mu\\mu$ from open charm decay in $p+A$ reactions\nat $\\sqrt s=200$ AGeV are proposed as a measure of nuclear shadowing effects.\nVia an approximate scaling, the ratio of the spectra from $p+A$ collisions to\nthose from $pp$ collisions is shown to reflect the shadowing function well.\nFinally it is shown that the required measurements are feasible at RHIC.",
"arxiv_id": "nucl-th/9609056",
"authors": [
"Ziwei Lin"
],
"categories": [
"nucl-th"
],
"title": "Open Charm Production and its Lepton Pair Signal in High Energy Nuclear Collisions",
"url": "https://arxiv.org/abs/nucl-th/9609056"
},
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