Read article 'Rare decay puts Standard Model on the spot'
The decay rate of the B0s meson to two muons is a flagship measurement in flavour physics. It is extremely rare and well predicted in the Standard Model (SM), with a branching fraction of (3.65±0.23)...
Read article 'Exotic hadrons bend the rules'
Half a century after the quark model was devised, a number of hadrons appear to challenge its axioms. But are they truly exotic?
Read article 'LHCb sees first hints of CP violation in baryons'
The LHCb experiment has uncovered tantalising evidence that baryons made of matter behave differently to those made of antimatter, violating fundamental charge-parity (CP) symmetry. Although CP-violat...
Read article 'ALICE studies beauty in the quark–gluon plasma'
In high-energy nucleus–nucleus collisions, heavy-flavour quarks (charm and beauty) are produced on a very short time scale in initial hard-scattering processes and thus they experience the entire ev...
Read article 'Run 2 promises a harvest of beauty for LHCb'
The first b-physics analysis using data from LHC Run 2, which began in 2015 with proton–proton collisions at an energy of 13 TeV, shows great promise for the physics programme of LHCb. During 201...
Read article 'LHCb targets new source of CP violation'
The LHCb collaboration presented new results at the 8th International Workshop on Charm Physics (Charm 2016), which took place in Bologna on 5 to 9 September. Among various novelties, the collaboratio...
Read article 'LHCb finds early surprises at Run 2'
The bumper data harvest at LHC Run 2 continues for the LHCb experiment. In mid-August, the collaboration celebrated the milestone of 1 fb–1 integrated luminosity collected so far during 2016, wit...
Read article 'LHCb finds tetraquark candidates'
The LHCb collaboration has reported the observation of three new exotic hadrons and confirmed the existence of a fourth by analysing the full data sample from LHC Run 1. Although the theoretical ...
Read article 'Belle II super-B factory experiment takes shape at KEK'
Following in the footsteps of Belle at the KEKB facility, a new super-B factory will search for new weak interactions in the flavour sector.
Read article 'ATLAS clocks rare decay of B mesons into muon pairs'
The decays of the B0s and B0 into muon pairs represent an important test of the Standard Model. Such decays take place through a flavour-changing neutral current process, which occurs only through loo...
