# EXA2011

5-9 September 2011
Europe/Vienna timezone
Thanks to all participants and have a good and safe trip home!

## Charm Physics at Belle

8 Sep 2011, 09:50
20m
Theatersaal (Austrian Academy of Sciences, Vienna)

### Theatersaal

#### Austrian Academy of Sciences, Vienna

Sonnenfelsgasse 19 1010 Vienna Austria

### Speaker

Dr Jolanta Brodzicka (INP Krakow)

### Description

Belle experiment at the KEKB factory, originally dedicated to studies of $B$ mesons, was proved to be a great place also for studying charm physics. The QCD motivated measurements of spectroscopy, decays and production of charmed and charmonium states were succesfully performed at Belle and initiated a lot of theoretical work. In particular, recent discoveries of charmonium-like resonances indicate a renaissance of the $c \bar{c}$ spectroscopy. These so called $XYZ$ states do not fit the conventional $c \bar{c}$ spectrum described, so far successfully, by the quark models. This suggests that some of them might be exotic and could realize an unproved area of QCD predictions.

### Primary author

Dr Jolanta Brodzicka (INP Krakow)

 Slides