<?xml version="1.0" encoding="UTF-8"?> <references> <reference> <a1>Mariani, Saverio</a1> <a2>Boettcher, Thomas</a2> <t1>Physics opportunities for heavy-ion and fixed-target physics with LHCb Upgrade II</t1> <t2/> <sn/> <op/> <vo/> <ab>Owing to its forward acceptance, allowing a kinematic region unaccessible to the other LHC experiments to be probed, and to the unique ability to study fixed-target collisions by injecting gases in the LHC beam-pipe, the LHCb experiment has developed a complete heavy ion physics programme since the LHC Run 2 (2015-2018). With its foreseen Upgrade II, expected to begin operating in the Run 5 of LHC, increased precision, rarer probes and even more ideas are at reach. This document is a write-up of a workshop held in Santiago de Compostela with the theoretical community between the first and third of July 2024, reports the outcome of the discussions there, and presents some of the prospects LHCb can target with Upgrade II.</ab> <la>eng</la> <k1>LHCb; </k1> <pb/> <pp/> <yr>2024</yr> <ed/> <ul/> <no>Imported from Invenio.</no> </reference> </references>