# Flavour physics

### Is the Standard Model about to crater?

There are now quite a few discrepancies, or “tensions”, between laboratory experiments and the predictions of the Standard Model (SM) of particle physics. All of them are of the 2...

Read article 'LHCb reports observation of pentaquarks'

### LHCb reports observation of pentaquarks

In 1964, Murray Gell-Mann and George Zweig independently predicted a substructure for hadrons: baryons would be comprised of three quarks, mesons of a quark–antiquark pair. They also said that b...

Read article 'J/ψ mesons, b decays and more'

### J/ψ mesons, b decays and more

At EPS-HEP2015, the LHCb collaboration presented the first measurement of the J/ψ production cross-section in proton–proton (pp) collisions at 13 TeV. Using this measurement, they also...

Read article 'Belle finds more exotic mesons'

### Belle finds more exotic mesons

The Belle collaboration has announced the discovery at the Japanese B-factory, KEKB, of three new exotic sub-atomic particles, which they have labelled the Z1, Z2 and Yb. The Z1 and Z2 states appear t...

Read article 'BaBar gets right to the bottom'

### BaBar gets right to the bottom

The BaBar collaboration, working at SLAC has observed the ground state of the bottomonium family, the ηb meson. Bottomonium particles are bound states of a bottom quark and its antiquark. The first ...

Read article 'Belle Collaboration discovers new meson'

### Belle Collaboration discovers new meson

The Belle collaboration at KEK has recently announced the discovery of an exotic new particle with non-zero electric charge. This particle, which the researchers have named the Z(4430), does not fit i...