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Recent Results from BESIII

High Energy Physics - Experiment 2019-08-13 v1

Abstract

BESIII is a new state-of-the-art 4π\pi detector at the upgraded BEPCII two-ring \ee\ee collider at the Institute of High Energy Physics in Beijing, China. It has been in operation since 2008, and has collected the world's largest data samples of \jpsi\jpsi, \psip\psip and ψ(3770)\psi(3770) decays, as well as τ\tau mass scan and low energy points for RR measurement. These data are being used to make a variety of interesting and unique studies of light-hadron spectroscopy, precision charmonium physics, high-statistics measurements of DD meson decays, τ\tau mass measurement and RR measurement. Results summarized in this report include observations of a subthreshold ppˉp\bar{p} resonance in \jpγppˉ\jp\to\gamma p\bar{p}, a large isospin-violation in η(1405)\rt\piz\fzero\eta(1405)\rt\piz\fzero decays, a near-threshold enhancement in \jpsi\rtγωϕ\jpsi\rt\gamma\omega\phi, and a M1 transition \psip\rtγηc(2S)\psip\rt\gamma\eta_c(2S); the ρπ\rho\pi puzzle in \jpsi\jpsi and \psip\psip decays; some recent precision measurements of \ec\ec and \hc\hc lineshapes; and preliminary results of the DD meson (semi-)leptonic decays and the τ\tau mass measurement.

Keywords

Cite

@article{arxiv.1209.4813,
  title  = {Recent Results from BESIII},
  author = {Guangshun Huang},
  journal= {arXiv preprint arXiv:1209.4813},
  year   = {2019}
}

Comments

17 pages, 12 figures, presented at Flavor Physics and CP Violation (FPCP 2012), Hefei, China, May 21-25, 2012

R2 v1 2026-06-21T22:09:02.750Z