It is known that multiple partonic scatterings in high-energy proton-proton (pp) collisions
must happen in parallel. However, a rigorous parallel scattering formalism, taking energy …

The discovery of collective effects in small collision systems has spurred a renewed interest
in hadronization models, and is also a source for collective effects all the way to large …

This paper is a write-up of the ideas that were presented, developed and discussed at the
fourth International Workshop on QCD Challenges from pp to AA, which took place in …

Abstract The Pythia8/Angantyr model for heavy ion collisions was recently updated with a
mechanism for global colour reconnection. The colour reconnection model used is QCD …

Experimental observations of extensive air showers have revealed an excess of the muon
content with respect to their theoretical simulations, which we refer to as the muon puzzle …

Open charm production in proton–proton collisions represents an important tool to
investigate some of the most fundamental aspects of quantum chromodynamics, from the …

We present an updated version of the QCD-based colour reconnection model in Pythia8,
where we constrain the range in impact parameter for which reconnections are allowed. In …

Quantum Chromodynamics predicts a phase transition from ordinary hadronic matter to the
quark-gluon plasma (QGP) at high temperatures and energy densities, where quarks and …

The transverse momentum spectra and their multiplicity dependence serve as key tools for
extracting parameters to be compared with theoretical models. Over the past decade, the …

The production of prompt $ D^+ _ {s} $ and $ D^+ $ mesons is measured by the LHCb
experiment in proton-lead ($ p\mathrm {Pb} $) collisions in both the forward ($1.5< y^*< …