News from BESIII

Abstract

BESIII is a new state-of-the-art 4pi detector at the recently upgraded BEPCII two-ring e+e- collider at the Institute of High Energy Physics in Beijing. It has been in operation for three years, during which time it has collected the world's largest data samples of J/psi, psi' and psi(3770) decays. These data are being used to make a variety of interesting and unique studies of light-hadron spectroscopy, precision charmonium physics and high-statistics measurements of D-meson decays. Results that I describe in this report include studies of ao(980)-fo(980) mixing, an observation of a large isospin-violation in eta(1405)-->pi0fo(980) decays, some puzzles in J/psi and psi' decays to light hadrons, the observation of two glueball candidate states in radiative J/psi-->gamma pi+pi-eta' decays and some recent precision measurements of eta_c and h_c lineshapes.