Light (Anti)Nuclei Production via Coalescence in Electron–Proton Collisions: from HERA to EIC

7 May 2026, 12:15
8m
Sala GIOVE A, Ground Floor (Hotel Carlton)

Sala GIOVE A, Ground Floor

Hotel Carlton

Flash talk WG4 QCD with Heavy Flavors and Hadronic Final States WG4 QCD with Heavy flavours and Hadronic Final States

Speaker

Niccolò Ciavarelli (Istituto Nazionale di Fisica Nucleare)

Description

The production mechanisms of light nuclei, particularly the coalescence model, have become a focal point of research in collider experiments. While hadron–hadron collisions have been extensively used to study light (anti)nuclei across a broad energy spectrum, the complexity of these interactions often obscures the underlying kinematics.

Deep-inelastic scattering (DIS) systems, such as electron–proton collisions, offer a cleaner, complementary environment due to their well-defined initial state. In particular, in the forward proton fragmentation region, the production of light (anti)nuclei is highly sensitive to the proton's valence quark structure. This makes it a powerful observable for probing proton structure and testing the coalescence mechanism in a controlled lepton–hadron environment.

In this work, we present predictions for light (anti)nuclei production via the coalescence model, implemented as an afterburner in PYTHIA simulations. We study electron–proton collisions at HERA energies and explore new kinematic regimes accessible at the future Electron–Ion Collider (EIC).

Speaker confirmation Yes

Author

Niccolò Ciavarelli (Istituto Nazionale di Fisica Nucleare)

Co-authors

Francesca Bellini (Istituto Nazionale di Fisica Nucleare) Francesco Noferini (Istituto Nazionale di Fisica Nucleare)

Presentation materials