Speaker
Laura Havener
(Columbia University)
Description
The heavy-ion program in the ATLAS experiment at the LHC originated as
an extensive program to probe and characterize the hot, dense matter
created in relativistic lead-lead collisions. In recent years, the
program has also broadened to a detailed study of collective behavior
in smaller systems. In particular, the techniques used to study
larger systems are also applied to proton-proton and proton-lead
collisions over a wide range of particle multiplicities, to try and
understand the early-time dynamics which lead to similar flow-like
features in all of the systems. Another recent development is a
program studying ultra-peripheral collisions, which provide
gamma-gamma and photonuclear processes over a wide range of CM energy,
to probe the nuclear wavefunction. This talk presents a subset of the the most recent
results from the ATLAS experiment based on Run 1 and Run 2 data,
including measurements of collectivity over a wide range of collision
systems, potential nPDF modifications — using electroweak bosons,
inclusive jets, and quarkonia — and photonuclear dijet production.
Primary author
Laura Havener
(Columbia University)
