May 22 – 26, 2023
IJCLab, Orsay (FRANCE)
Europe/Paris timezone

Collinear dynamics beyond DGLAP

May 23, 2023, 9:50 AM
Auditorium Joliot Curie (IJCLab, Orsay (FRANCE))

Auditorium Joliot Curie

IJCLab, Orsay (FRANCE)

15, Rue G. Clemenceau 91405 Orsay Cedex FRANCE


Max Jaarsma (Universiteit van Amsterdam)


The DGLAP evolution equations are arguably the most important evolution equations for collider physics applications. However, DGLAP doesn’t capture correlations in fragmentation, which e.g. enter in dihadron fragmentation or the study of energy flow within jets. In this talk I present a general non-linear collinear evolution equation, that accounts for these correlations. We have calculated the next-to-leading order evolution kernels and shown that they reproduce DGLAP for single hadron fragmentation. Furthermore, the (so far unknown) next-to-leading order evolution of N-hadron fragmentation functions can be directly obtained from our results. Finally, the full evolution equations are needed for track functions, which can be applied to calculations of track-based observables.

Primary authors

Hao Chen Hua Xing Zhu Ian Moult Max Jaarsma (Universiteit van Amsterdam) Wouter Waalewijn Yibei Li

Presentation materials