Crossing and Radon tomography for generalized parton distributions
The crossing properties of the matrix elements of non-local operators, parameterized by generalized parton distribution, are considered. They are especially simple in terms of the double distributions which are common for the various kinematical regions. As a result, double distributions may be in p...
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| Published in: | Physics letters. B Vol. 510; no. 1; pp. 125 - 132 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
21-06-2001
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| Online Access: | Get full text |
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| Summary: | The crossing properties of the matrix elements of non-local operators, parameterized by generalized parton distribution, are considered. They are especially simple in terms of the double distributions which are common for the various kinematical regions. As a result, double distributions may be in principle extracted from the combined data in these regions by making use of the inverse Radon transform, known as a standard method in tomography. The ambiguities analogous to the ones for the vector potential in the two-dimensional magneto-statics are outlined. The possible generalizations are discussed. |
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| ISSN: | 0370-2693 1873-2445 |
| DOI: | 10.1016/S0370-2693(01)00564-0 |