Figure 2: Relative importance of various t t̄ decay modes. Combining this with measurements from the CDF experiment 2 provides a new ‘world average’ (based on all measurements available) for ...

Distributions of mlb representing different values of the top-quark decay width (Γt). The bottom panel shows the ratio of alternative widths to the Standard Model prediction.

Nevertheless, mesons decay quite quickly, offering a crucial opportunity for symmetry to be broken. One paper reports on the ...

For decades, physicists sought the Higgs boson: the theorized “God particle” whose alter ego, a field pervading the entire universe, endows matter with mass. In 2012, scientists finally found ...

Nevertheless, mesons decay quite quickly, offering a crucial opportunity for symmetry to be broken. One paper reports on the decay of charged beauty mesons, composed of either a beauty quark and ...

For about ~20 years, one such example that’s been under investigation is the branching fractions and CP asymmetries of B-mesons, which are quark-antiquark combinations that contain one b or anti ...

Although the quark–gluon plasma at the LHC vanishes after about 10-23 s, scientists can study it by analysing how other particles produced in collisions move through it. The top quark is the heaviest ...

The problem with studying this state of matter is that quarks decay very, very quickly, in just a tiny fraction of a second. The quark-gluon plasma that emerged after the Big Bang only existed for ...