Determination of unpolarized TMD distributions from the fit of Drell-Yan and SIDIS data at N4LL

Valentin Moos^1*, Ignazio Scimemi², Pia Zurita², Alexey Vladimirov²

¹Institute of Physics, NYCU, Hsinchu, Taiwan
²Departamento de Fisica Teorica & IPARCOS, Universidad Complutense de Madrid, Madrid, Spain

* Presenter:Valentin Moos, email:vmoos@nycu.edu.tw

After the conceptual improvements to transverse momentum dependent (TMD) extractions of a flavour dependent ansatz as well as a more robust propagation of uncertainties onto the resulting TMD functions in ART23, the following work ART25 is a state of the art determination of the unpolarised TMD parton distribution functions and -fragmentation functions such as the Collins-Soper kernel via a global fit on the available data.

With a simplistic model we achieve a good result for the fit and describe the data in the relevant phase space, provided by measurements of the semi-inclusive DIS and the Drell-Yan process.

In my talk I am going to briefly review the framework of the extraction,
and present the results of this work.

Keywords: TMDs, Collins-Soper kernel, Phenomenology