%0 Electronic Article
%A Bertone, Valerio
%A Echevarria, Miguel G.
%A del Rio, Óscar
%A Rodini, Simone
%T One-loop matching for leading-twist generalised transverse-momentum-dependent distributions
%N DESY-25-024
%M PUBDB-2025-00696
%M DESY-25-024
%M arXiv:2502.07576
%M IPARCOS-UCM-25-004
%D 2025
%Z 27 pages, 3 figures
%X 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.
%F PUB:(DE-HGF)25
%9 Preprint
%R 10.3204/PUBDB-2025-00696
%U https://bib-pubdb1.desy.de/record/623573