Bermúdez Martínez, ArmandoVladimirov, Alexey2023-06-222023-06-222022-11-022470-001010.1103/PhysRevD.106.L091501https://hdl.handle.net/20.500.14352/73033© 2002 Amer Physical Soc We thank Hannes Jung and Francesco Hautmann for discussions, and also Qi-An Zhang and Alessandro Bacchetta for providing us with their extractions. A. V. is funded by the Atraccion de Talento Investigador program of the Comunidad de Madrid (Spain) No. 2020-T1/TIC -20204. This work was partially supported by DFG FOR 2926 Next Generation pQCD for Hadron Structure: Preparing for the EIC , Project No. 430824754The Collins-Soper kernel is a powerful tool for studying the properties of the QCD vacuum and an essential component of the transverse momentum dependent (TMD) factorization theorem. In this paper, we present a novel method for determining the Collins-Soper kernel directly from the comparison of differential cross sections measured at different energies. The method relies solely on the structure of the TMD factorization theorem and thus also provides a direct test of the theorem validity. With minor modifications, the procedure can be applied to the real measured data for Drell-Yan and SIDIS processes. As a demonstration, we analyze the pseudodata generated by the CASCADE event generator and determine the Collins-Soper kernel suggested by the parton branching model.engjournal articlehttp://dx.doi.org/10.1103/PhysRevD.106.L091501https://journals.aps.org/open access53Astronomy & astrophysicsPhysicsparticles & fieldsFísica (Física)22 Física