ALICE, ATLAS, CMS and LHCb presented their key physics results at an end-of-year series of talks

The first collisions of lead nuclei mark the start of the latest LHC heavy-ion run

The main LHC collaborations present a wealth of new results at this year’s Quark Matter conference

The first observation of a neutron-star merger by the LIGO and Virgo collaborations has allowed researchers to improve the theory of quark matter

Published in Nature Physics ALICE reports proton collisions sometimes present similar patterns to those observed in the collisions of heavy nuclei

The LHC experiment collaborations presented their latest results at the Quark Matter conference on how matter behaved in the universe's first moments

For the third time ever the LHC today began colliding beams of protons with lead ions to probe the early universe from which matter emerged

There were presentations from ALICE, CMS, ATLAS and LHCb at the international conference on ultrarelativistic heavy-ion collisions this week

The ATLAS measurement compared data of 2.76 TeV lead-ion collisions taken in 2011 with proton-proton data from a dedicated run of the LHC in 2013

At Quark Matter 2014 this week in Germany, the ALICE, ATLAS and CMS experiments are presenting the latest results from the LHC's heavy-ion programme

Aaron Richard Angerami of Columbia University in the US presents "Soft and hard probes of high-temperature matter with the ATLAS experiment"

The ALICE experiment will be watching the collisions closely to tease out the effects of lead ions from the effects of the plasma