PreprintarXiv licencearXiv
Light meson decays at BESIII
Abstract
The world's largest sample of J/ψ events accumulated with the BESIII detector offers a unique opportunity to investigate η and η' physics via the radiative transition processes J/ψ→ γη/η'. A selection of recent highlights in light meson spectroscopy achieved at BESIII is reviewed in these proceedings, including evidence for the cusp effect in η' → π0π0η, precision studies of the decay mechanisms of η→ 3π and η' → 4π, electromagnetic transition form factor measurements with η/η' → γe+e- and η' → π+π-l+l-, as well as searches for rare decays of η and η' into lepton pairs, including η→ l+l- and η/η' → l+l-l+l-~(l = e, μ).
Related
BibTeX
@misc{li2026light,
title = {{Light meson decays at BESIII}},
author = {Kailu Li},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.24472},
eprint = {2610.24472},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.24472},
}
RIS
TY - UNPB
TI - Light meson decays at BESIII
AU - Kailu Li
PY - 2026
DA - 2026/10/17
PB - arXiv
DO - 10.48550/arxiv.2610.24472
UR - https://arxiv.org/abs/2610.24472
AB - The world's largest sample of J/ψ events accumulated with the BESIII detector offers a unique opportunity to investigate η and η' physics via the radiative transition processes J/ψ→ γη/η'. A selection of recent highlights in light meson spectroscopy achieved at BESIII is reviewed in these proceedings, including evidence for the cusp effect in η' → π^0π^0η, precision studies of the decay mechanisms of η→ 3π and η' → 4π, electromagnetic transition form factor measurements with η/η' → γe^+e^- and η' → π^+π^-l^+l^-, as well as searches for rare decays of η and η' into lepton pairs, including η→ l^+l^- and η/η' → l^+l^-l^+l^-~(l = e, μ).
ER -