Highlights from BESIII

TL;DR

This paper summarizes recent BESIII collaboration results in charmonium and D meson physics, including discoveries of new states, decay studies, and precise measurements of particle properties.

Contribution

It presents new experimental findings such as the observation of the charged charmonium-like state Zc(3900) and detailed measurements of meson decay constants and form factors.

Findings

Observation of the Zc(3900) state

Measurements of meson decay constants and form factors

Mass and width determinations for charmonium states

Abstract

We present a selection of recent results from the BESIII collaboration, including both charmonium and $D$ meson physics. We first discuss the observation of a charged, charmonium-like state, the $Z_c(3900)$. Conventional charmonium topics include a search for lepton flavor violation, studies of $\chi_{cJ} \to \gamma\gamma$ decays, and mass and width determinations for the $h_c$, $\eta_c(1S)$, and $\eta_c(2S)$. We finish with results on the decay constant $f_D$ from $D^+ \to \mu^+ \nu$ and on form-factors in $D^0 \to K^- e^+ \nu, \pi^- e^+ \nu$.