Provenance Record

Excellent science journalism at 765 words (within News 400-1200 range). Well-organized with Overview, What We Know, What We Don't Know, and Analysis sections. Complex physics concepts explained clearly with effective analogies (boat wake, duck on water). Appropriate technical depth without being inaccessible.

All 3 sources fetched and verified. (1) news.mit.edu: confirms 13 billion collisions analyzed, ~2,000 Z boson events identified, Yen-Jie Lee leading the team, paper published in Physics Letters B, paper title matches verbatim, 'splashes and swirls like a liquid' quote confirmed, DOE funding confirmed, Z boson technique description matches. (2) physics.mit.edu: confirms dual wake structure description, Krishna Rajagopal's hybrid model predictions, fluid-like behavior findings, collaborator quotes about 'first clean, clear, unambiguous evidence'. (3) home.cern: confirms QGP existed in first microseconds after Big Bang, behaves as nearly perfect fluid with low viscosity, recreated via heavy-ion collisions, fireball density 30-50x ordinary nucleus.

All major claims verified against sources. Key numbers confirmed: 13 billion collisions, ~2,000 Z boson events, paper title exact match. Researcher attributions correct: Yen-Jie Lee (MIT), Krishna Rajagopal (MIT), Yi Chen (Vanderbilt). One minor note: the article states 'temperatures exceeding several trillion degrees Celsius' which is not explicitly stated in any of the 3 sources but is well-established physics knowledge about QGP conditions — acceptable as general scientific context. The claim about 'ten sextillionths of a second' for LHC-created plasma droplets is distinct from CERN's 'few millionths of a second' for the early universe — the article correctly distinguishes between lab-created droplets and the primordial plasma, which is accurate.

High-quality science news article with strong sourcing from MIT and CERN. All claims verified, clear explanations of complex physics, and balanced coverage including uncertainties. Ready for publication.