PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Hadron spectroscopy and exotics
Observation of the first hidden-charm strange tetraquark at BESIII
J. Zhao
Full text: pdf
Pre-published on: March 02, 2022
Published on:
Abstract
In the last ten years, a whole set of new particles not fitting in the constituent quark model has populated the mass region above the open-charm threshold. The Beijing Spectrometer (BESIII), installed at the Beijing Electron Positron Collider (BEPCII), can access these states both in electron-positron annihilations and from the decays of charmonium(-like) states. In this proceeding, the discovery of the $Z_{cs}(3985)^-$ at BESIII with a mass of $3982.5^{+1.8}_{-2.6}\pm2.1$ MeV$/c^2$ will be addressed. The resonance was observed by analyzing data collected at five center-of-mass energy points in the range from 4.628 GeV to 4.698 GeV, with a total integrated luminosity of $3.7~\rm{fb}^{-1}$. Due to its properties, the $Z_{cs}(3985)^-$ is a strong candidate for the predicted open-strange charmonium-like tetraquark with the minimal structure $c\bar{c}s\bar{u}$.
DOI: https://doi.org/10.22323/1.380.0185
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.