One-loop matching for leading-twist generalised transverse-momentum-dependent distributions
Abstract We present the one-loop matching coefficients necessary to match all of the leading-twist generalised transverse-momentum-dependent distributions (GTMDs) onto generalised parton distributions (GPDs). Matching functions are extracted by computing the first radiative corrections to partonic b...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-05-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP05(2025)183 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850223934584127488 |
|---|---|
| author | Valerio Bertone Miguel G. Echevarria Oscar del Rio Simone Rodini |
| author_facet | Valerio Bertone Miguel G. Echevarria Oscar del Rio Simone Rodini |
| author_sort | Valerio Bertone |
| collection | DOAJ |
| description | Abstract We present the one-loop matching coefficients necessary to match all of the leading-twist generalised transverse-momentum-dependent distributions (GTMDs) onto generalised parton distributions (GPDs). Matching functions are extracted by computing the first radiative corrections to partonic bilocal correlators with staple-like Wilson lines, as appropriate for high-energy collisions. These correlators are characterised by a transverse displacement and skewed kinematics of external states. Using the proton helicity basis, they are parametrised in terms of GTMDs, which are subsequently related to leading-twist GPDs. Our results provide new insights into the complex dynamics of GTMDs generated by radiative corrections. In particular, we show that time-reversal even and odd contributions to GTMDs in the so-called ERBL region mix both under matching and evolution. Finally, we present a selection of numerical results and comment on the quantitative behaviour of GTMDs. |
| format | Article |
| id | doaj-art-a4a098b6c0dd49d38c33c30f0c44a8d4 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-a4a098b6c0dd49d38c33c30f0c44a8d42025-08-20T02:05:46ZengSpringerOpenJournal of High Energy Physics1029-84792025-05-012025513110.1007/JHEP05(2025)183One-loop matching for leading-twist generalised transverse-momentum-dependent distributionsValerio Bertone0Miguel G. Echevarria1Oscar del Rio2Simone Rodini3IRFU, CEA, Université Paris-SaclayDepartment of Physics, University of the Basque Country UPV/EHUDepartment of Theoretical Physics & IPARCOS, Complutense University of MadridDeutsches Elektronen-Synchrotron DESYAbstract We present the one-loop matching coefficients necessary to match all of the leading-twist generalised transverse-momentum-dependent distributions (GTMDs) onto generalised parton distributions (GPDs). Matching functions are extracted by computing the first radiative corrections to partonic bilocal correlators with staple-like Wilson lines, as appropriate for high-energy collisions. These correlators are characterised by a transverse displacement and skewed kinematics of external states. Using the proton helicity basis, they are parametrised in terms of GTMDs, which are subsequently related to leading-twist GPDs. Our results provide new insights into the complex dynamics of GTMDs generated by radiative corrections. In particular, we show that time-reversal even and odd contributions to GTMDs in the so-called ERBL region mix both under matching and evolution. Finally, we present a selection of numerical results and comment on the quantitative behaviour of GTMDs.https://doi.org/10.1007/JHEP05(2025)183Parton DistributionsFactorizationRenormalization GroupProperties of Hadrons |
| spellingShingle | Valerio Bertone Miguel G. Echevarria Oscar del Rio Simone Rodini One-loop matching for leading-twist generalised transverse-momentum-dependent distributions Journal of High Energy Physics Parton Distributions Factorization Renormalization Group Properties of Hadrons |
| title | One-loop matching for leading-twist generalised transverse-momentum-dependent distributions |
| title_full | One-loop matching for leading-twist generalised transverse-momentum-dependent distributions |
| title_fullStr | One-loop matching for leading-twist generalised transverse-momentum-dependent distributions |
| title_full_unstemmed | One-loop matching for leading-twist generalised transverse-momentum-dependent distributions |
| title_short | One-loop matching for leading-twist generalised transverse-momentum-dependent distributions |
| title_sort | one loop matching for leading twist generalised transverse momentum dependent distributions |
| topic | Parton Distributions Factorization Renormalization Group Properties of Hadrons |
| url | https://doi.org/10.1007/JHEP05(2025)183 |
| work_keys_str_mv | AT valeriobertone oneloopmatchingforleadingtwistgeneralisedtransversemomentumdependentdistributions AT miguelgechevarria oneloopmatchingforleadingtwistgeneralisedtransversemomentumdependentdistributions AT oscardelrio oneloopmatchingforleadingtwistgeneralisedtransversemomentumdependentdistributions AT simonerodini oneloopmatchingforleadingtwistgeneralisedtransversemomentumdependentdistributions |