dorsal/arxiv
View SchemaOn Distribution Functions for Partons in Nuclei
| Authors | A. S. Rinat, M. F. Taragin |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0501006 |
| URL | https://arxiv.org/abs/nucl-th/0501006 |
| DOI | 10.1103/PhysRevC.72.065209 |
| Journal | Phys.Rev. C72 (2005) 065209 |
Abstract
We suggest that a previously conjectured relation between Structure Functions (SF) for nuclei and nucleons also links distribution functions (df) for partons in a nucleus and in nucleons. The above suggestion ensures in principle identical results for SF $F_2^A$, whether computed with hadronic or partonic degrees of freedom. In practice there are differences, due to different $F_2^n$ input. We show that the thus defined nuclear parton distribution functions (pdf) respect standard sumrules. In addition we numerically compare some moments of nuclear SF, and find agreement between results, using hadronic and partonic descriptions. We present computations of EMC ratios for both, and compare those with hadronic predictions and data. In spite of substantial differences in the participating SF, the two representations produce approximately the same EMC ratios. The apparent correlation between the above deviations is ascribed to a sumrule for $F_2^A$. We conclude with a discussion of alternative approaches to nuclear pdf.
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"abstract": "We suggest that a previously conjectured relation between Structure Functions\n(SF) for nuclei and nucleons also links distribution functions (df) for partons\nin a nucleus and in nucleons. The above suggestion ensures in principle\nidentical results for SF $F_2^A$, whether computed with hadronic or partonic\ndegrees of freedom. In practice there are differences, due to different $F_2^n$\ninput. We show that the thus defined nuclear parton distribution functions\n(pdf) respect standard sumrules. In addition we numerically compare some\nmoments of nuclear SF, and find agreement between results, using hadronic and\npartonic descriptions. We present computations of EMC ratios for both, and\ncompare those with hadronic predictions and data. In spite of substantial\ndifferences in the participating SF, the two representations produce\napproximately the same EMC ratios. The apparent correlation between the above\ndeviations is ascribed to a sumrule for $F_2^A$. We conclude with a discussion\nof alternative approaches to nuclear pdf.",
"arxiv_id": "nucl-th/0501006",
"authors": [
"A. S. Rinat",
"M. F. Taragin"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.72.065209",
"journal_ref": "Phys.Rev. C72 (2005) 065209",
"title": "On Distribution Functions for Partons in Nuclei",
"url": "https://arxiv.org/abs/nucl-th/0501006"
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