Transverse momentum dependent splitting functions in the Parton Branching method

15 Apr 2021, 10:00
18m
Virtual (Stony Brook, NY)

Virtual

Stony Brook, NY

Online
Contributed Talk Structure Functions and Parton Densities Structure function and parton densities

Speaker

Lissa Keersmaekers (University of Antwerp)

Description

The Parton Branching (PB) approach provides a way to obtain transverse momentum dependent (TMD) parton densities. Its equations are written in terms of splitting functions and Sudakov form factors and can be solved with Monte Carlo methods. Even though the transverse momentum is known in every branching, the PB method currently uses the DGLAP splitting functions, which assume that the parton has no transverse momentum. We propose to extend the PB method by including TMD splitting functions, a concept from high-energy factorization.

We present the evolution equations and their solutions obtained with a Monte Carlo Simulation and show numerically the effects that TMD splitting functions have on the TMD distribution functions.

Primary authors

Aleksander Kusina (Institute of Nuclear Physics PAN) Aleksandra Lelek (University of Antwerp) Francesco Hautmann Hannes Jung (DESY) Krzysztof Kutak (Institute of Nuclear Physics Polish Academy of Sciences) Lissa Keersmaekers (University of Antwerp) Martin Hentschinski (Universidad de las Americas Puebla)

Presentation materials