Searcharxiv⌕ Search

arXiv subjects

Chun-Hua Liu

Publications and source records attributed to Chun-Hua Liu.

3 recordsLinked to original sources
arXiv2025

A combined analysis of $Y(2240)$ in the $e^+ e^- \to K^+ K^-$ and $e^+ e^- \to K_S^0 K_L^0$ processes

In the present work, we perform a combined analysis of the cross sections for $e^+ e^- \to K^+ K^-$ and $e^+ e^- \to K_S^0 K_L^0$ by including the interference between direct coupling process and resonance intermediate process. When setting the isospin factor as a free parameter, we can well reproduce the structures in the cross sections for $e^+ e^- \to K^+ K^-$ and $e^+ e^- \to K_S^0 K_L^0$, however, the isospin factor deviates with the isospin symmetry conservation predicted value of one. By fixing the isospin factor to be one, we find the cross sections for $e^+ e^-\to K^+ K^-$ can be accurately fitted, while the same model parameters fail to adequately reproduce the observed cross section for the process $e^+ e^- \to K_S^0 K_L^0$, which indicate that there should be contributions from other vector meson states, such as $ρ(2150)$ and $ω(2220)$. More precise experimental measurement below 2.0 GeV and between $2.3\sim 2.5$ GeV may provide more information about the vector resonances in this energy range, which should be accessible for the BESIII collaboration.

hep-ph↗
arXiv2023

Production of dibaryon $d_{NΩ}$ in kaon induced reactions

In this work, we propose to investigate the $d_{NΩ}$ dibaryon production in the process $K^- p \rightarrow d_{NΩ} \barΞ^0$ by utilizing the kaon beam with the typical momentum to be around 10 GeV, which may be available at COMPASS, OKA@U-70 and SPS@CERN. The cross sections for $K^- p \rightarrow d_{NΩ} \barΞ^0$ are estimated and in particular, the magnitude of the cross sections are evaluated to be several hundreds nanobarn at $P_K=20$ GeV. Considering that $d_{NΩ}$ dibaryon dominantly decay into $ΞΛ$ and $ΞΣ$, we also estimate the cross sections for $K^- p \to Ξ^0 Λ\barΞ^0$ and $K^- p \to Ξ^- Σ^+ \barΞ^0$, where the $d_{NΩ}$ dibaryon can be observed in the invariant mass distributions of $Ξ^0 Λ$ and $Ξ^- Σ^+ $, respectively.

hep-ph↗
arXiv2022

hidden charm decays of $X(4014)$ in a $D^{*}\bar{D}^{*}$ molecule scenario

Inspired by the recent observation of a new structure, $X(4014)$, in the process $γγ\to γψ(2S)$, we evaluate the possibility of assigning $X(4014)$ as a $D^\ast \bar{D}^\ast$ molecular state with $I(J^{PC})=0(0^{++})$ by investigating the hidden charm decays of $X(4014)$. The partial widths of $J/ψω$, $ η_{c}η$ and $η_{c}η^{\prime}$ channels are evaluated to be about $(0.41\sim 5.00)$, $(2.05\sim7.49)$ and $(0.11\sim0.51)\ \mathrm{MeV}$, respectively. Considering the experimental observation and the present estimations, we proposed to search $X(4014)$ in the $γγ\to J/ψω$ process in Belle II.

hep-ph↗