The Discreet Charm of the X(3872)
The CMS Collaboration announced the first observation of a new way the B0s meson – a particle combining the beauty quark (b) and the strange quark (s) – can disintegrate. The observation involves two other particles, the well-known ϕ meson, which consists of a strange quark and its antiquark, and a mysterious particle called X(3872), which was […]