QCD Evolution 2026

Session

Session A2

12 May 2026, 18:00

El Escorial

5. The DIS dipole picture cross section in exact kinematics

Magnus Bertilsson (University of Jyväskylä)

12/05/2026, 18:00

Predictions for the inclusive DIS total cross section at small $x$ are commonly obtained using the forward elastic scattering amplitude in the dipole picture. However, the usual dipole picture assumes an asymptotically large photon-proton center-of-mass energy $W$, such that the phase space of the produced partonic system at the unitarity cut remains unconstrained. In this work, we move away...

14. Rapidity Dependent Beam Functions at NNLO

Thomas Clark (University of Manchester)

12/05/2026, 18:20

Jet vetoes are important tools that can be used to separate hard processes. A commonly used variable in which jets are identified and vetoed is the transverse-momentum of a jet. Experimentally, reconstructing small transverse momentum jets at forward rapidities is challenging, which motivates introducing a cut on a jets rapidity to reduce sensitivity to this region. Existing SCET leading-jet...

24. NNLO QCD corrections to hadron production in DIS at finite transverse momentum

Shen Fang (Fudan University)

12/05/2026, 18:40

We present the first complete calculation of hadron production in deep-inelastic scattering (DIS) at finite transverse momentum to next-to-next-to-leading order (NNLO) in perturbative QCD.
To overcome the long-standing challenge of infrared divergences in semi-inclusive processes with identified final state hadrons at finite transverse momentum, we implement the recently developed...

44. NNLO extraction of Unpolarized Di-hadron fragmentation Functions

LUCA POLANO (University of Pavia, Istituto Nazionale di Fisica Nucleare)

13/05/2026, 18:00

Di-hadron Fragmentation Functions (DiFFs) provide a unique tool to probe the chiral-odd transversity parton distribution in a collinear framework. Current determinations of transversity using this approach are performed at leading-order (LO) accuracy, so achieving higher precision requires extending the extraction of DiFFs beyond LO. In this presentation, I will report a new extraction of the...

63. From Collinear to TMD Distributions in the Large-x Regime

Óscar del Río García (Universidad Complutense Madrid)

13/05/2026, 18:20

This talk addresses the large-x behavior of Transverse Momentum Dependent distributions (TMDs) through the resummation of leading logarithmic corrections to their collinear matching coefficients. Rather than working at the process level, resummation is carried out directly within the TMD framework, thereby maintaining process-independence. A notable feature of this approach is its extension to...