Hyperon--nucleon interactions at BESIII
Abstract
Hyperon--nucleon interactions provide essential information on the strange sector of baryon--baryon forces, with implications for hypernuclei, dense baryonic matter, and non-perturbative QCD. Direct experimental information, however, remains scarce because hyperons are short lived and intense conventional hyperon beams are difficult to produce. At BESIII, hyperons and antihyperons produced in charmonium decays can instead be used as incident particles, while the detector material serves as an effective fixed target. This approach has enabled a new program of hyperon--nucleon studies at an e+e- collider. Representative results include the first study of Ξ0n→Ξ-p using Ξ0--nucleus scattering, measurements of elastic Λp→Λp and Λ̅p→Λ̅p scattering, and recent observations of Λ̅p annihilation into multi-meson final states. These measurements demonstrate that BESIII can operate as an effective hyperon--nucleon scattering facility and provide new experimental constraints on the poorly explored strange sector of baryon--baryon interactions.
Related
- From hyperon--nucleon interactions to deuteron--hyperon femtoscopy
- Neutrino-induced hyperon final-state interactions as a probe of the in-medium hyperon potential
- Nucleon Strong-Interactions Size From Charmonium Photoproduction
- Benchmarking Nucleon Production in Hadron Interactions Relevant for GeV-scale Neutrino Experiments
- Spin-Dependent Nucleon-Nucleus Interactions Constrained by Neutron Observables and Their Impact on Near-Barrier Proton Fusion
BibTeX
@misc{shen2026hyperonnucleon,
title = {{Hyperon--nucleon interactions at BESIII}},
author = {Hong-Fei Shen},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.20756},
eprint = {2610.20756},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.20756},
}
RIS
TY - UNPB
TI - Hyperon--nucleon interactions at BESIII
AU - Hong-Fei Shen
PY - 2026
DA - 2026/10/14
PB - arXiv
DO - 10.48550/arxiv.2610.20756
UR - https://arxiv.org/abs/2610.20756
AB - Hyperon--nucleon interactions provide essential information on the strange sector of baryon--baryon forces, with implications for hypernuclei, dense baryonic matter, and non-perturbative QCD. Direct experimental information, however, remains scarce because hyperons are short lived and intense conventional hyperon beams are difficult to produce. At BESIII, hyperons and antihyperons produced in charmonium decays can instead be used as incident particles, while the detector material serves as an effective fixed target. This approach has enabled a new program of hyperon--nucleon studies at an e^+e^- collider. Representative results include the first study of Ξ^0n→Ξ^-p using Ξ^0--nucleus scattering, measurements of elastic Λp→Λp and Λ̅p→Λ̅p scattering, and recent observations of Λ̅p annihilation into multi-meson final states. These measurements demonstrate that BESIII can operate as an effective hyperon--nucleon scattering facility and provide new experimental constraints on the poorly explored strange sector of baryon--baryon interactions.
ER -