BESIII X(3790) enhancement as a reflection of higher charmed mesons
Abstract
In this work, we show that the X(3790) reported by the BESIII Collaboration is unlikely to be a genuine resonance, a conclusion that follows from the incompleteness of the BESIII experimental analysis. Although BESIII included the established charmed mesons that couple to Dπ, as listed by the Particle Data Group, and incorporated their reflections in the D0D- invariant mass spectrum, this fit to the experimental data does not exhaust the charmed mesons that can contribute to the D0D- invariant mass spectrum through reflections, as can be explicitly seen from a theoretical charmed-meson spectroscopy. We find that a predicted charmed meson, either D(3 3S1) or D(2 3D1), can play a crucial role in mimicking the X(3790) structure through the corresponding reflection. This warrants caution in interpreting the X(3790) as a genuine resonance. Moreover, such an interpretation is not supported by most theoretical studies of DD̅ hadronic molecules and compact cc̅du̅ tetraquarks currently available.
Related
- Higher excited charmed and charmed-strange mesons in an unquenched quark model
- Charmed baryon decays at BESIII
- Leading-twist to higher-twist generalized parton distributions of the pseudoscalar mesons at non-zero skewness
- Where are the higher excited B and Bs mesons with coupled-channel effects?
- Cross Section Measurements and Searches for New Structures in e+e- Annihilations at BESIII
BibTeX
@misc{sun2026besiii,
title = {{BESIII $X(3790)$ enhancement as a reflection of higher charmed mesons}},
author = {Peng-Yu Sun and Tian-Le Gao and Xiang Liu},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.03046},
eprint = {2611.03046},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.03046},
note = {CC0},
}
RIS
TY - UNPB
TI - BESIII X(3790) enhancement as a reflection of higher charmed mesons
AU - Peng-Yu Sun
AU - Tian-Le Gao
AU - Xiang Liu
PY - 2026
DA - 2026/11/02
PB - arXiv
DO - 10.48550/arxiv.2611.03046
UR - https://arxiv.org/abs/2611.03046
AB - In this work, we show that the X(3790) reported by the BESIII Collaboration is unlikely to be a genuine resonance, a conclusion that follows from the incompleteness of the BESIII experimental analysis. Although BESIII included the established charmed mesons that couple to Dπ, as listed by the Particle Data Group, and incorporated their reflections in the D^0D^- invariant mass spectrum, this fit to the experimental data does not exhaust the charmed mesons that can contribute to the D^0D^- invariant mass spectrum through reflections, as can be explicitly seen from a theoretical charmed-meson spectroscopy. We find that a predicted charmed meson, either D(3 ^3S_1) or D(2 ^3D_1), can play a crucial role in mimicking the X(3790) structure through the corresponding reflection. This warrants caution in interpreting the X(3790) as a genuine resonance. Moreover, such an interpretation is not supported by most theoretical studies of DD̅ hadronic molecules and compact cc̅du̅ tetraquarks currently available.
ER -