Description
This track is dedicated to QCD in the high-energy regime, focusing on parton distributions, hadronisation, jet physics, strong dynamics, and lattice calculations.
Using a (3+1)D hydrodynamic model, we analyze Λ hyperon polarization in heavy-ion collisions at √sNN = 200 GeV, revealing a strong dependence on initial conditions and QGP viscosity. The model accurately reproduces hadronic flow observables and predicts higher-order azimuthal oscillations in longitudinal polarization. Novel correlations between polarization and anisotropic flow are proposed,...
This study measures the Lund jet plane and the dead cone effect in b-jets from single-leptonic and di-leptonic $t\bar{t}$ events. Using the Cambridge/Aachen algorithm for jet reclustering, we look for suppressed emissions at small angles indicative of the dead cone effect. We employ a novel graph neural network based jet flavour tagger (GN2) that labels over 80% of b-hadron decay tracks via...
I will discuss the implementation of quarkonium parton shower and decay in Herwig 7, integrating non-relativistic QCD factorisation with spin-colour projections. Both colour-singlet and colour-octet channels are included, capturing S- and P-wave states and feed-down effects from higher excitations. The wavefunction formalism at small quark–antiquark separations is matched to short-distance...
Charm quark fragmentation functions describe the probability of charm quarks hadronising into particular charm hadrons. Understanding such functions will provide valuable data for studies involving charm hadrons, such as the development of flavour tagging algorithms and MC event generators. This talk will discuss the approach to the measurement of the charm fragmentation function by analysing...
