Resummation, Evolution and Factorization REF 2026

Session

Talks I

19 Oct 2026, 15:30

Santiago de Compostela, Spain

34. Status and challenges of global analyses of PDFs at N3LO

Dr Juan M. Cruz Martinez (Universidad de Sevilla)

19/10/2026, 15:30

Parton distribution functions (PDFs) are among the most important inputs for predictions at hadron colliders.
Today, state-of-the-art global analyses have reached the milestone of (approximated) N3LO accuracy. This represents an important step towards fully exploiting the data of the LHC, and the precision potential of future colliders.
I will discuss the main challenges, including missing...

28. TMD evolution and intrinsic transverse momentum extraction

Prof. Laurent Favart (Universite Libre de Bruxelles (BE))

19/10/2026, 16:00

The parton branching (PB) method allows using TMD evolution with standard Monte Carlo event generators, replacing the current approximate treatment of initial state radiation with a rigorous prediction from first principles. A key parameter of PB is the intrinsic kT, which governs the low-scale behaviour of the TMD. In its first extraction from collider Drell-Yan data, tensions appeared...

13. A Global Analysis of the Thrust Distribution in e+e- Annihilation: Determination of alpha_S and Non-Perturbative QCD Parameters

Giorgio Chiurato (University of Milan & INFN)

19/10/2026, 16:20

We present a global analysis of the thrust distribution in $e^+e^-$ annihilation aimed at determining the strong coupling constant $\alpha_S$ together with the parameters describing non-perturbative QCD effects. The theoretical prediction is based on Sudakov resummation in the Laplace moment space at $N^3LL$ accuracy, matched to fixed-order $NNLO$ calculations. Non-perturbative effects are...