English

A subthreshold pole in electron-positron annihilation into the $D_s^+D_s^-$ final state

High Energy Physics - Phenomenology 2026-04-03 v5 High Energy Physics - Experiment

Abstract

Using precise data from the BESIII collaboration, we obtained compelling evidence of a subthreshold pole in the e+eDs+Dse^+ e^-\rightarrow D_s^+ D_s^- process with mass of (389622+13^{+13}_{-22})~MeV. The latter suggests the identification of this subthreshold pole with the GG(3900) state, which behaves as a resonance in the e+eDDˉe^+ e^-\rightarrow D\bar D processes.

Keywords

Cite

@article{arxiv.2507.05181,
  title  = {A subthreshold pole in electron-positron annihilation into the $D_s^+D_s^-$ final state},
  author = {Peter Lichard and Josef Juráň},
  journal= {arXiv preprint arXiv:2507.05181},
  year   = {2026}
}

Comments

Four pages, three figures

R2 v1 2026-07-01T03:49:49.434Z