Read article 'Proton-radius puzzle deepens'
The international CREMA (Charge Radius Experiment with Muonic Atoms) collaboration has measured the radius of the deuteron more accurately than ever before, finding that it is significantly smaller th...
Read article 'DIRAC experiment observes new exotic atom'
Inclusive πK production via the interaction p + Ni → π−K+ + X. The ionisation or break up of AKπ leads to so-called atomic pairs. Image credit: arXiv:1605.06103v1. 
The DIRAC (DIm...
Read article 'ALICE pinpoints J/ψ regeneration'
The ALICE Collaboration has measured with improved precision the production of J/ψ mesons in collisions of lead nuclei at the highest LHC energy, confirming the role of the “regeneration mechanismâ...
Read article 'CMS observes collective phenomena in pp collisions'
When heavy nuclei collide at high energies, a novel state of hot and dense matter – the quark–gluon plasma (QGP) – is expected to form. As a region of QGP expands and cools, it disso...
Read article 'ALICE measures higher-flow harmonics'
In a collision between two nuclei that exhibits a large impact parameter, the initial spatial anisotropy of the overlap region was conjectured to be smooth and almond shaped. In the past few years, ho...
Read article 'ALICE separates hot and cold nuclear effects'
In the early stages of a high-energy collision, high-pT partons can be created, before producing sprays of hadrons that are measured experimentally as jets. Not only do high-pT partons carry informati...
Read article 'ALICE probes small-system dynamics with charm production at the LHC'
The first p–Pb data-taking campaign at the LHC was undertaken as a test of the initial state of heavy-ion collisions (CERN Courier March 2014 p17 and CERN Courier October 2013 p17), and surprisingly...
Read article 'ALICE finds a new source of charmonium'
The ALICE collaboration has studied the production of charmonium – bound states of charm and anti-charm quarks – in hadronic as well as in ultra-peripheral collisions of lead nuclei at √sNN = ...
Read article 'Anisotropic flow in Run 2'
Exploiting the data collected during November 2015 with Pb–Pb collisions at the record-breaking energy of √sNN = 5.02 TeV, ALICE measured for the first time the anisotropic flow of charged part...
Read article 'ALICE selects gas electron multipliers for its new TPC'
 The ALICE experiment is devoted to the study of strongly interacting matter, where temperatures are sufficiently high to overcome hadronic confinement, and the effective degrees of freedom are ...
