Probing the structure of the pomeron
We suggest that the pseudo-rapidity cut dependence of diffractive deep-inelastic scattering events at HERA may provide a sensitive test of models of diffraction. A comparison with the experimental cross section shows that the Donnachie-Landshoff model and a simple two-gluon exchange model of the pom...
| Main Authors: | , , |
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| Format: | Journal article |
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SpringerOpen
1999
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| _version_ | 1797065404823109632 |
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| author | Ellis, J Ross, G Williams, J |
| author_facet | Ellis, J Ross, G Williams, J |
| author_sort | Ellis, J |
| collection | OXFORD |
| description | We suggest that the pseudo-rapidity cut dependence of diffractive deep-inelastic scattering events at HERA may provide a sensitive test of models of diffraction. A comparison with the experimental cross section shows that the Donnachie-Landshoff model and a simple two-gluon exchange model of the pomeron model are disfavoured. However a model with a direct coupling of the pomeron to quarks is viable for a harder quark--pomeron form factor, as is a model based on the leading-twist operator contribution. We also consider a direct-coupling scalar pomeron model. We comment on the implications of these results for the determination of the partonic structure of the pomeron. |
| first_indexed | 2024-03-06T21:28:11Z |
| format | Journal article |
| id | oxford-uuid:43ccfc51-15f5-488b-b938-2e9e7e097f62 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:28:11Z |
| publishDate | 1999 |
| publisher | SpringerOpen |
| record_format | dspace |
| spelling | oxford-uuid:43ccfc51-15f5-488b-b938-2e9e7e097f622022-03-26T14:57:40ZProbing the structure of the pomeronJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:43ccfc51-15f5-488b-b938-2e9e7e097f62Symplectic Elements at OxfordSpringerOpen1999Ellis, JRoss, GWilliams, JWe suggest that the pseudo-rapidity cut dependence of diffractive deep-inelastic scattering events at HERA may provide a sensitive test of models of diffraction. A comparison with the experimental cross section shows that the Donnachie-Landshoff model and a simple two-gluon exchange model of the pomeron model are disfavoured. However a model with a direct coupling of the pomeron to quarks is viable for a harder quark--pomeron form factor, as is a model based on the leading-twist operator contribution. We also consider a direct-coupling scalar pomeron model. We comment on the implications of these results for the determination of the partonic structure of the pomeron. |
| spellingShingle | Ellis, J Ross, G Williams, J Probing the structure of the pomeron |
| title | Probing the structure of the pomeron |
| title_full | Probing the structure of the pomeron |
| title_fullStr | Probing the structure of the pomeron |
| title_full_unstemmed | Probing the structure of the pomeron |
| title_short | Probing the structure of the pomeron |
| title_sort | probing the structure of the pomeron |
| work_keys_str_mv | AT ellisj probingthestructureofthepomeron AT rossg probingthestructureofthepomeron AT williamsj probingthestructureofthepomeron |