Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Transverse momentum dependent splitting functions in the Parton Branching method

Jul 9, 2022, 9:30 AM
Room 1 (Europa Auditorium)

Room 1 (Europa Auditorium)

Parallel Talk Strong interactions and Hadron Physics Strong interactions and Hadron Physics


Lissa Keersmaekers (University of Antwerp)


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

In-person participation Yes

Primary authors

Aleksander Kusina (Institute of Nuclear Physics Polish Academy of Sciences) Aleksandra Lelek (UAntwerp) Lissa Keersmaekers (University of Antwerp) Francesco Hautmann Krzysztof Kutak (IFJ PAN) Martin Hentschinski (BNL)

Presentation materials