Flavour physics

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...

Read article 'BaBar collaboration detects new resonance'

BaBar collaboration detects new resonance

Charmonium spectroscopy has seen a revival over the past year or so, with various groups reporting heavy charmonium states (see CERN Courier January 2004 p9). The BaBar collaboration has now added to ...

Read article 'BaBar finds direct CP violation in B decays'

BaBar finds direct CP violation in B decays

It is a classic example of the question to ask aliens from a distant galaxy to discover if they are made from what we on Earth define as matter or antimatter. Tell them to make neutral B mesons and an...

Read article 'BaBar’s new particle shows unexpected traits'

BaBar’s new particle shows unexpected traits

The BaBar experiment at SLAC has revealed a new narrow particle state that has been identified as a charmed meson, that is, a charm quark, c, bound with an antiquark, in this case a strange antiquark,...