[IP2I Seminar] Hadronic Physics - Prof. Ragunath Sahoo - Search for a Microsecond-old Universe in proton and light-ion collisions at the Large Hadron Collider

lundi 10 nov. 2025, 14:00 → 15:00 Europe/Paris

Dirac/RdC-Amphithéâtre (IP2I)

The fundamental constituents of the visible universe are partons—quarks, gluons and leptons. However, quarks and gluons don’t have an independent existence and are confined to the hadrons e.g. protons, neutrons etc. High-temperature Quantum Chromodynamics (QCD) suggests that a soup of quarks and gluons can be created in the laboratory in GeV-TeV nuclear collisions, which is short-lived. For decades, intense research has been conducted at the high-energy and luminosity frontiers to create such a deconfined matter in the laboratory. Recently, high-multiplicity proton collisions at the Large Hadron Collider have shown QGP-like properties that are seen in heavy-ion collisions. Light-ion collisions thus form a bridge between proton-proton and heavy-ion collisions, and offer an interesting avenue to create and study QGP in the laboratory.

In this colloquium, after introducing the field of research, I shall focus on some of the interesting aspects of light-ion collisions and QGP signatures.