M. Ablikim

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.

Confirmation of a charged charmoniumlike state Z(c)(3885)(-/+) in e(+)e(-) -> pi(+/-) (D(D)over-bar*)(-/+) with double D tag

We present a study of the process

Measurement of

e^+e^-\to\pi^{\pm}(D\bar{D}^*)^{\mp}

\psip

using data samples of 1092~pb

Radiative Decays

^{-1}

Observation of e(+)e(-) -> omega chi(c1,2) near root s=4.42 and 4.6 GeV

at

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

\sqrt{s}=4.23

Evidence for f0(980)f0(980) production in Χc0 decays

~GeV and 826~pb

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

^{-1}

Study of

at