id author title date pages extension mime words sentence flesch summary cache txt news-008518 Breakthrough discovery links two of the heaviest known particles | News | Notre Dame News | University of Notre Dame .html text/html 1060 35 48 Because Higgs bosons and top quarks are short-lived particles, they almost immediately transform into more-stable daughter particles, many of which also decay. Hildreth and Lannon worked with their students to measure the signature coupling of Higgs boson with top quarks, because particular decays have different signatures. cache/news-008518.html txt/news-008518.txt