Towards small-x resummed parton distribution functions
We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small-x logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken x when resummation effects are...
| Huvudupphovsmän: | , |
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| Materialtyp: | Journal article |
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International School for Advanced Studies
2018
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| _version_ | 1826294372052762624 |
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| author | Rottoli, L Bonvini, M |
| author_facet | Rottoli, L Bonvini, M |
| author_sort | Rottoli, L |
| collection | OXFORD |
| description | We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small-x logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken x when resummation effects are included. The improvement is more marked when comparing NNLO+NLLx fits to NNLO ones, and is particularly noticeable for small-x and small-Q 2 HERA inclusive structure functions. The main effect of the resummation is an enhancement of the gluon and singlet PDFs at small-x, which persists at high scales. |
| first_indexed | 2024-03-07T03:44:37Z |
| format | Journal article |
| id | oxford-uuid:bf083b28-ac0c-49b2-b21f-bb58ebf3d1f5 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:44:37Z |
| publishDate | 2018 |
| publisher | International School for Advanced Studies |
| record_format | dspace |
| spelling | oxford-uuid:bf083b28-ac0c-49b2-b21f-bb58ebf3d1f52022-03-27T05:44:25ZTowards small-x resummed parton distribution functionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:bf083b28-ac0c-49b2-b21f-bb58ebf3d1f5Symplectic Elements at OxfordInternational School for Advanced Studies2018Rottoli, LBonvini, M We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small-x logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken x when resummation effects are included. The improvement is more marked when comparing NNLO+NLLx fits to NNLO ones, and is particularly noticeable for small-x and small-Q 2 HERA inclusive structure functions. The main effect of the resummation is an enhancement of the gluon and singlet PDFs at small-x, which persists at high scales. |
| spellingShingle | Rottoli, L Bonvini, M Towards small-x resummed parton distribution functions |
| title | Towards small-x resummed parton distribution functions |
| title_full | Towards small-x resummed parton distribution functions |
| title_fullStr | Towards small-x resummed parton distribution functions |
| title_full_unstemmed | Towards small-x resummed parton distribution functions |
| title_short | Towards small-x resummed parton distribution functions |
| title_sort | towards small x resummed parton distribution functions |
| work_keys_str_mv | AT rottolil towardssmallxresummedpartondistributionfunctions AT bonvinim towardssmallxresummedpartondistributionfunctions |