TY  - EJOUR
AU  - Bertone, Valerio
AU  - Echevarria, Miguel G.
AU  - del Rio, Óscar
AU  - Rodini, Simone
TI  - One-loop matching for leading-twist generalised transverse-momentum-dependent distributions
IS  - DESY-25-024
M1  - PUBDB-2025-00696
M1  - DESY-25-024
M1  - arXiv:2502.07576
M1  - IPARCOS-UCM-25-004
PY  - 2025
N1  - 27 pages, 3 figures
AB  - 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.
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2025-00696
UR  - https://bib-pubdb1.desy.de/record/623573
ER  -