Read article 'ALFA in ATLAS measures pp cross-section with high precision'
Data from a special run of the LHC using dedicated beam optics at 7 TeV have been analysed to measure the total cross-section of proton–proton collisions in ATLAS.
Read article 'Precise measurements of top-quark production'
The top quark is the heaviest-known fundamental particle, whose mass of about 173 GeV is much larger than that of the other quarks, and comparable to those of the W, Z and Higgs bosons.
Read article 'COSY confirms existence of six-quark states'
Experiments at the Jülich Cooler Synchrotron (COSY) have found compelling evidence for a new state in the two-baryon system, with a mass of 2380 MeV and width of 80 MeV
Read article 'ALICE and the flowing particle zoo'
Relativistic heavy-ion collisions produce large numbers of particles that do not move individually, but rather as an organized group, with a collective motion known as flow. Flow studies at Brookhaven...
Read article 'New results from ATLAS at Quark Matter 2014'
At the Quark Matter 2014 conference, held in Darmstadt on 19–25 May, ATLAS presented a variety of new results based on lead–lead (PbPb) and proton–lead (pPb) data collected during Run 1 of the...
Read article 'Quark Matter 2014: news from ALICE'
The new results shown by the ALICE collaboration at the Quark Matter 2014 conference in Darmstadt focus principally on the most recent collisions at the LHC – those of protons and lead nuclei (p...
Read article 'Quark Matter 2014: news from CMS'
Although the CMS experiment was designed primarily for precise measurements in proton–proton (pp) collisions, in recent years it has demonstrated exceptional capabilities in studying interactions of...
Read article 'On the trail of exotic particles'
Since the quark model was first conceived 50 years ago, physicists have been searching for "exotic" hadrons – strongly interacting particles that are neither quark–antiquark pairs (mesons) nor th...
Read article 'LHC and Tevatron teams announce first joint result'
The collaborations working on the world’s leading particle-collider experiments have joined forces, combined their data and produced the first joint result from Fermilab’s Tevatron collider and CE...
Read article 'LHCf investigates proton–lead collisions'
The final run of the LHC in January 2013 prior to the start of the current long shutdown provided collisions between a beam of protons and a beam of lead ions, allowing the LHCf experiment to make fur...
