#CMSpaper even shorter:
We measure if particles being produced (relatively) far away from each other still feel each other in proton-proton LHC collisions, which happens and was not expected (but expected in lead-lead collisions). This paper measures that effect in a new way (and more precisely)
https://sciencemastodon.com/@freyablekman/110807845797642798
@freyablekman why is it not expected?