Story
ALICE sees new sign of primordial plasma in proton collisions
Key takeaway
The ALICE experiment has found possible signs of an extremely hot, dense state of matter similar to what existed right after the Big Bang, suggesting even smaller collisions between protons can produce these conditions. This provides new clues about the early universe.
Quick Explainer
The ALICE Collaboration has found new evidence that a quark-gluon plasma, the state of matter that existed in the early universe, can be produced in proton-proton and proton-nucleus collisions, in addition to the previously observed heavy ion collisions.
