Drell Yan production in the parton branching method and POWHEG matching

Abstract

As part of the DESY summer student program 2021, transverse momentum dependent (TMD) parton distributions obtained from the Parton Branching (PB) method were combined with next-to-leading-order (NLO) using the POWHEG method. Computations of the resulting Drell-Yan (DY) transverse momentum spectrum were performed. A good agreement of the theoretical predictions with the measurement performed by the CMS experiment at the center-of-mass energy of 13 TeV is found, at low and intermediate DY $p_{\mathrm{T}}$. The new scale choice option for the matching has been included in the CASCADE event generator.

Comments: Part of the DESY summerstudent program 2021 (DESYsummer2021)