Particle Physics

Cracks in a model

Print edition : May 26, 2017

In a tunnel of the Large Hadron Collider at CERN, the European Organisation for Nuclear Research, in Meyrin, Switzerland, a worker cycles along during maintenance work. A file photograph. Photo: FABRICE COFFRINI/AFP

B meson decay. Depicted here is the b meson decay in two modes, and both should be equally probable.

The mass puzzle. Why fundamental particles have varied masses is something that is not understood fully.

Inside an atom. Just as an atom can be split, physicists found that even protons and neutrons can be split.

Layers of matter. Matter is layered with molecules, atoms, subatomic particles and the world of quarks. Are they the final stage of matter?

The startling LHC “beauty” experiment discovery hints at a tantalising new physics that is a significant modification of the Standard Model of particle physics.

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