Read article 'What’s the quark matter?'
Careful analysis of data collected by the NA50 experiment studying high-energy heavy-ion collisions at CERN shows clear signs of new behaviour, suggesting that under these conditions the colliding nu...
Read article 'Probing the pomeron'
What ultimately controls the way particles interact? Different particles appear to interact at high energies in similar ways through a mechanism known as pomeron exchange. Sandy Donnachie explains wha...
Read article 'Neutrons in time'
A new limit on the electric dipole moment of the neutron comes from an experiment using ultra-cold neutrons at the research reactor at the international Institut Laue-Langevin, Grenoble, France.
Read article 'CERN: Circular solution to the enigma of nucleon spin'
Over half the nucleon's spin is unaccounted for, but circularly-polarized photons could soon reveal where it is.
Read article 'The ratchet of time'
New results remind us how, in the strange world of the neutral kaon, a fast rewind does not necessarily take you back to where you started.
Read article 'Putting a spin on physics'
Both theoretically and experimentally, spin physics has always been a challenge. Although many physicists proudly point to an increased understanding, some spin puzzles are still waiting for an expl...
Read article 'Quarks in hadrons and nuclei'
The idea of quarks as the ultimate constituents of strongly interacting particles has long been conventional dogma. Less well known, but no less important, is the role of quarks in nuclei. A recent ...
Read article 'HERMES heralds insight into nucleon spin'
In which direction do quarks point? The HERMES experiment using DESY's HERA electron ring and an ingenious system to control the spin of the electron beam is poised to reveal new insights into the...
Read article '25 years of asymptotic freedom'
A quarter of a century ago, several theorists published an unexpected result which opened the door to quantum chromodynamics (QCD), the unusual field theory that describes quarks and gluons. This ye...
