O. Bondarenko

Observation of the Psi(1(3)D(2)) State in e(+)e(-) -> pi(+)pi(-)gamma chi(c1) at BESIII

We report the observation of the X(3823) state in the process e(+)e(-) -> pi(+)pi(-) X(3823) pi(+)pi(-)gamma chi(c1) with a statistical significance of 6.2 sigma, in data samples at center-of-mass energies root s = 4.230, 4.260, 4.360, 4.420, and 4.600 GeV collected with the BESIII detector at the BEPCII electron positron collider. The measured mass of the X(3823) state is (3821.7 +/- 1.3 +/- 0.7) MeV/c(2), where the first error is statistical and the second systematic, and the width is less than 16 MeV at the 90% confidence level. The products of the Born cross sections for e(+)e(-) -> pi(+)pi(-) X(3823) and the branching ratio B [X(3823) -> gamma X-c1c2] are also measured. These measurements are in good agreement with the assignment of the X(3823) state as the Psi(1(3)D(2)) charmonium state.

Study of J/psi -> omega p(p)over-bar at BESIII

The decay

Partial wave analysis of psi(2S) -> p(p)over-bar eta

J/\psi \rightarrow \omega p \bar{p}

Study of

has been studied, using

J/\psi \rightarrow \omega p \bar{p}

225.3\times 10^{6}

Study of J/psi -> p(p)over-bar and J/psi -> n(n)over-bar

J/\psi

An Improved Limit for Gamma_ee of X(3872) and Gamma_ee Measurement of psi(3686)

events accumulated at BESIII. No significant enhancement near the

Measurement of B(psi(3770) -> gamma chi(c1)) and search for psi(3770) -> gamma chi(c2)

p\bar{p}

Search for the isospin violating decay

invariant-mass threshold (denoted as