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Opportunities of OO and $p$O collisions at the LHC

This is the summary document of the virtual workshop "Opportunities of OO and pppO collisions at the LHC", which took place Feb 4-10, 2021. We briefly review the presented perspectives on the physics opportunities of oxygen--oxygen and proton--oxygen collisions. The full workshop program and the recordings are available at cern.ch/OppOatLHC.

Initial conditions for nuclear collisions: theory overview