Read article 'CMS presents new 13 TeV results at end-of-year jamboree'
The first phase of collisions after the LHC restart earlier this year provided CMS with data at the novel energy of 13 TeV, enabling CMS to explore uncharted domains of physics. At the end of this ex...
Read article 'Fixed-target and heavy-ion physics with LHCb'
Beyond its rich programme in flavour physics based on proton–proton collisions, LHCb opened the door in 2015 to a new domain of physics exploration related to cosmic-ray and heavy-ion physics. D...
Read article 'A new chapter opens with more Pb–Pb collisions for a precision study of hot and dense QCD matter'
After the restart of the LHC physics programme in June 2015 with world-record proton– proton collisions at √s = 13 TeV, nuclear beams reappeared in the LHC tunnel in Novembe...
Read article 'MicroBooNE records first neutrino events'
MicroBooNE, an experiment designed to measure neutrinos and antineutrinos generated by Fermilab’s Booster accelerator (CERN Courier September 2014 p8), has recorded its first neutrino events. Mi...
Read article 'Nearby supernova accounts for cosmic-ray ‘anomalies’'
The observed spectrum of cosmic rays has several puzzling features. For instance, the Alpha Magnetic Spectrometer (AMS) measured an excess of positrons and antiprotons at around 100 GeV. While it...
Read article 'High Luminosity LHC moves forward'
October 2015 was a turning point for the High Luminosity LHC (HL-LHC) project, marking the end of the European-funded HiLumi LHC Design Study activities, and the transition to the construction phase, ...
Read article 'A new record for the RMC test magnet at CERN'
High magnetic fields are the Holy Grail of high-energy accelerators. The strength of the dipole field determines the maximum energy the beam can achieve on a given orbit, and large-aperture, high-grad...
Read article 'CMS data-scouting and a search for low-mass dijet resonances'
Proton beams crossed inside each of the CMS and ATLAS detectors 20 million times a second during the 2012 LHC proton–proton run. However, the physics programme of CMS is based on only a small subse...
Read article 'LHCb measures the effective double parton scattering cross-section with unprecedented precision'
In high-energy hadron–hadron collisions, each incoming hadron behaves as a loosely bound system of massless partons – quarks, antiquarks and gluons. The interaction of incoming hadrons is describe...
Read article 'ATLAS observes long-range elliptic anisotropies in √s = 13 and 2.76 TeV pp collisions'
Measurements of two-particle angular correlations in proton–proton (pp) collisions at the LHC have shown a feature commonly called the “ridge”: an enhancement in production of particle p...
