Resummation, Evolution and Factorization REF 2026

Session

Talks XIV

23 Oct 2026, 09:30

Santiago de Compostela, Spain

32. Jet fragmentation at next-to-single log (NSL) for general cuts

Alexander Fraley (University of Manchester)

23/10/2026, 09:30

It has been shown recently that defining a jet by a transverse-momentum style resolution parameter produces a fragmentation function that evolves with the standard timelike $\overline{\rm MS}$ DGLAP kernels, to next-to—single logarithmic ($\alpha_s^n L^{n-1}$) accuracy. In contrast the NSL fragmentation function for a purely angular cut like a small jet radius deviates from time-like DGLAP...

26. Locally finite Higgs+jet amplitudes at two loops from G-K decomposition

Aniruddha Venkata

23/10/2026, 09:50

I will present a new formalism for constructing integrand-level finite representations of scattering amplitudes. The central ingredient is an exact graphical decomposition of gluon propagation into physical (G) and unphysical (K) polarizations. Applied directly to Feynman graphs, the (G)-(K) decomposition generates exact identities at the level of Feynman integrals, without making soft...

40. Charge-Charge Correlation in QCD

Zhen Xu (DESY)

23/10/2026, 10:10

We investigate the Charge-Charge Correlation (QQC) as a probe of charge dynamics in Quantum Chromodynamics. While generally divergent beyond leading order, we show that the QQC is infrared and collinear safe in the back-to-back limit, a property that we dub leading-power safety. This enables an analytic perturbative treatment that bypasses the reliance on non-perturbative track or...

41. Factorization and Resummation for three-point energy correlator measured on boosted top quark jets

Damiano Barcaro (DESY)

23/10/2026, 10:30

A precise and well-defined top quark mass measurement is essential for electroweak fits and vacuum stability studies, and is a prerequisite for the precision program of future colliders. In this talk, I will present the three-point energy correlator (EEEC) as a new probe of top quark decay, with the goal of achieving a theoretically controlled mass determination.
Heavy unstable particles...

31. TMD factorisation and quarkonium

Pieter Taels (University of Antwerp)

23/10/2026, 10:50

Since a long time, quarkonium states have been put forward as excellent probes of the gluon transverse-momentum-dependent (TMD) distributions of the proton. Indeed, being composed of a heavy-quark pair, quarkonia couple to gluons already at lowest order in perturbation theory. It is, however, not so straightforward to establish rigorous factorisation theorems for the relevant cross sections,...