Endpoint singularities in unintegrated parton distributions
We examine the singular behavior from the endpoint region x → 1 in parton distributions unintegrated in both longitudinal and transverse momenta. We identify and regularize the singularities by using the subtraction method, and compare this with the cut-off regularization method. The counterterms fo...
Main Author: | |
---|---|
Format: | Journal article |
Language: | English |
Published: |
2007
|
_version_ | 1797104636730015744 |
---|---|
author | Hautmann, F |
author_facet | Hautmann, F |
author_sort | Hautmann, F |
collection | OXFORD |
description | We examine the singular behavior from the endpoint region x → 1 in parton distributions unintegrated in both longitudinal and transverse momenta. We identify and regularize the singularities by using the subtraction method, and compare this with the cut-off regularization method. The counterterms for the distributions with subtractive regularization are given in coordinate space by compact all-order expressions in terms of eikonal-line operators. We carry out an explicit calculation at one loop for the unintegrated quark distribution. We discuss the relation of the unintegrated parton distributions in subtractive regularization with the ordinary parton distributions. © 2007 Elsevier B.V. All rights reserved. |
first_indexed | 2024-03-07T06:36:31Z |
format | Journal article |
id | oxford-uuid:f7d99679-1b19-4eee-a251-71981703ee0f |
institution | University of Oxford |
language | English |
last_indexed | 2024-03-07T06:36:31Z |
publishDate | 2007 |
record_format | dspace |
spelling | oxford-uuid:f7d99679-1b19-4eee-a251-71981703ee0f2022-03-27T12:45:36ZEndpoint singularities in unintegrated parton distributionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f7d99679-1b19-4eee-a251-71981703ee0fEnglishSymplectic Elements at Oxford2007Hautmann, FWe examine the singular behavior from the endpoint region x → 1 in parton distributions unintegrated in both longitudinal and transverse momenta. We identify and regularize the singularities by using the subtraction method, and compare this with the cut-off regularization method. The counterterms for the distributions with subtractive regularization are given in coordinate space by compact all-order expressions in terms of eikonal-line operators. We carry out an explicit calculation at one loop for the unintegrated quark distribution. We discuss the relation of the unintegrated parton distributions in subtractive regularization with the ordinary parton distributions. © 2007 Elsevier B.V. All rights reserved. |
spellingShingle | Hautmann, F Endpoint singularities in unintegrated parton distributions |
title | Endpoint singularities in unintegrated parton distributions |
title_full | Endpoint singularities in unintegrated parton distributions |
title_fullStr | Endpoint singularities in unintegrated parton distributions |
title_full_unstemmed | Endpoint singularities in unintegrated parton distributions |
title_short | Endpoint singularities in unintegrated parton distributions |
title_sort | endpoint singularities in unintegrated parton distributions |
work_keys_str_mv | AT hautmannf endpointsingularitiesinunintegratedpartondistributions |