RT Journal Article
T1 Factorization for quasi-TMD distributions of sub-leading power
A1 Rodini, Simone
A1 Vladimirov, Alexey
AB The quasi-transverse-momentum dependent (qTMD) distributions are equal-time correlators that can be computed within the lattice QCD approach. In the regime of large hadron’s momentum, qTMD distributions are expressed in terms of standard TMD distributions via the factorization theorem. We derive the corresponding factorization theorem at the next-to-leading power (NLP), and, for the first time, we present the factorized expressions for a large class of qTMD distributions of sub-leading power. The NLP expression contains TMD distributions of twist-two, twist-three, and a new lattice-specific nonperturbative function. We point out that some of the qTMD distributions considered in this work can be employed to extract the Collins-Soper kernel using the standard techniques of different-momenta ratios. We provide NLO expressions for all the elements of the factorization theorem. Also, for the first time, we explicitly demonstrate the restoration of boost invariance of the TMD factorization at NLP.
PB Springer
SN 1126-6708
YR 2023
FD 2023-09-19
LK https://hdl.handle.net/20.500.14352/102968
UL https://hdl.handle.net/20.500.14352/102968
LA eng
NO 2023 Descuento SCOAP
NO Comunidad de Madrid
NO Ministerio de Ciencia e Innovación (España)
NO Deutsche Forschungsgemeinschaft (DFG)
NO Ecole Polytechnique
DS Docta Complutense
RD 17 abr 2025