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.

Scientists at CERN have observed an unexpected phenomenon within the world’s largest particle accelerator that suggests that ...

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 ...

Higher; Nuclear reactions Radioactive decay. Alpha decay involves the release of a helium nucleus. Beta decay involves the release of an electron. Both result in a mass defect and the release of ...