Read article 'ATLAS completes precision luminosity measurement'
The success of the procedure for vdM scans at the LHC resulted from close co-operation between the LHC accelerator team and the four large experimental collaborations.
Read article 'Supernova remnants accelerate cosmic rays'
A century after the discovery of cosmic rays, NASA’s Fermi Gamma-ray Space Telescope has gathered strong evidence that protons are, indeed, accelerated to high-energies by supernova remnants (SN...
Read article 'Proton–ion collisions: the final challenge'
In the last beam period before a two-year shutdown, the LHC began 2013 with a challenge: proton–ion collisions.
Read article 'Source of lead ions'
Every so often the source of the lead ions has to be replaced.
Read article 'ALICE and ATLAS find intriguing ‘double ridge’ in proton–lead collisions'
In analysing data from last year’s test run with proton–lead collisions in the LHC, the ALICE collaboration, followed almost immediately and independently by the ATLAS collaboration, have ...
Read article 'First measurements of electroweak boson fusion'
In proton collisions at the LHC, vector boson fusion (VBF) happens when quarks from each one of the two colliding protons radiate W or Z bosons that subsequently interact or "fuse" as in the Feynman d...
Read article 'LHCb pins down X(3872) quantum numbers'
One of the most interesting discoveries of the past decade is that of an unconventional hadron, the X(3872), by the Belle experiment (Belle 2003).
Read article 'AEgIS installation completed'
Despite first being described over three centuries ago, gravity remains one of the least understood of the fundamental forces.
Read article 'Pulsar exhibits puzzling switches in state'
Astronomers have detected simultaneous X-ray and radio-mode switches in co-ordinated observations of a pulsar. Pulsed X-ray emission is only present in states of weak radio emission. This indicates a ...
Read article 'Marking the end of the first proton run'
At 6 a.m. on 17 December, operators ended the LHC’s first three-year-long run for proton physics with a new performance milestone. In the preceding days, the space between proton bunches had been ...
