arXiv subjects

Qing-Yong Lin

Publications and source records attributed to Qing-Yong Lin.

8 recordsLinked to original sources

arXiv2022

Searching for $ X_{0}(2900) $ and $ X_{1}(2900) $ through the kaon induced reactions

The productions of the exotic states $ X_0(2900) $ and $ X_1(2900) $ in $K^{+}p \to Σ_{c}^{++}X_{0}(2900)$ and $K^{+}p \to Σ_{c}^{++}X_{1}(2900)$ reactions are studied within an effective Lagrangian approach. The $t-$channel Born term is included to calculate the production cross sections. The numerical results show that the total cross section may reach up to about 0.5 nb and 25 nb for the production of $ X_0(2900) $ and $ X_1(2900) $, respectively. The predicted differential cross sections are sensitive to the scattering angles and have strong forward enhancements. The cross sections for the $K^{+}n \to Λ_{c}^{+}X_{0,1}$ are also calculated and found to be larger than that in $K^{+}p$ collisions by more than one order of magnitude. The results are helpful to the possible experiments at J-PARC and COMPASS.

hep-ph↗

arXiv2022

Production of charmed baryon $Λ_c(2860)$ via low energy antiproton-proton interaction

In the present work, we study the production problem of the charmed baryon $Λ_c(2860)^+$ at $\overline{\mbox{P}}$ANDA. With the $J^P=\frac{3}{2}^+$ assignment to $Λ_c(2860)^+$, an effective Lagrangian approach is adopted to calculate the cross section of $p\bar{p} \to Λ_c^-Λ_c(2860)^+$. The Dalitz plot analysis and the $D^0p$ invariant mass spectrum distribution are also given for the $p\bar{p} \to Λ_c^-Λ_c(2860)^+ \to Λ_c^-pD^0$ process. The numerical results show that the total cross section may reach up to about 10 $ μ$b. With the designed luminosity of $\overline{\mbox{P}}$ANDA ($2\times10^{32}~\mbox{cm}^{-2}\mbox{s}^{-1}$), about $ 10^8 $ $Λ_c(2860)$ events can be expected per day by reconstructing the final $ pD^0 $.

hep-ph↗

arXiv2021

Production of the bottomonium-like states $Z_b$ states at $e$-$h$ and ultraperipheral $h$-$h$ collisions

The photoproduction of bottomonium-like states $Z_{b}(10610)$ and $Z_{b}(10650)$ via $γp$ scattering is studied within an effectiv Lagrangian approach and the vector-meson-dominance model. The Regge model is employed to calculate the photoproduction of $Z_{b}$ states via $t$-channel with $π$ exchange.The numerical results show that the values of the total cross-sections of $Z_{b}(10610)$ and $Z_{b}(10650)$ can reach 0.09 nb and 0.02 nb, respectively, near the center of mass energy of 22 GeV. The experimental measurements and studies on the photoproduction of $Z_{b}$ states near energy region around $W\simeq 22$ GeV is suggested. Moreover, with the help of eSTARlight and STARlight programs, one obtains the cross-sections and event numbers of $Z_{b}(10610)$ production in electron-ion collision (EIC) and Ultraperipheral collisions (UPCs). The results show that a considerable number of events from $Z_{b}(10610)$ can be produced on the relevant experiments of EICs and UPCs. Also, one calculates the rates and kinematic distributions for $γp\rightarrow Z_{b}n$ in $ep$ and $pA$ collisions via EICs and UPCs, and the relevant results will provide an important reference for the RHIC, LHC, EIC-US, LHeC, and FCC experiments to search for the bottomonium-like $Z_{b}$ states.

hep-ph↗

arXiv2020

Discovery potential for the LHCb fully-charm tetraquark $X(6900)$ state via $\bar{p}p$ annihilation reaction

Inspired by the observation of the fully-charm tetraquark $X(6900)$ state at LHCb, the production of $X(6900)$ in $\bar{p}p\rightarrow J/ψJ/ψ$ reaction is studied within an effective Lagrangian approach and Breit-Wigner formula. The numerical results show that the cross section of $X(6900)$ at the c.m. energy of 6.9 GeV is much larger than that from the background contribution. Moreover, we estimate dozens of signal events can be detected by D0 experiment, which indicates that searching for the $X(6900)$ via antiproton-proton scattering may be a very important and promising way. Therefore, related experiments are suggested to be carried out.

hep-ph↗

arXiv2014

First estimate of producing the charmed baryon $Λ_c(2880)$ at PANDA

In the present work we explore the production potential of $Λ_c(2880)^+$ at PANDA. With the $J^P=\frac{5}{2}^+$ assignment to $Λ_c(2880)^+$, we calculate the differential and total cross sections of $p\bar{p}\to Λ_c^-Λ_c(2880)^+$. We also perform the Dalitz plot analysis and give the $pD^0$ invariant mass spectrum distribution of the process $p\bar{p}\to Λ_c^-pD^0$, where the signal and background contributions are considered. Our numerical results indicate that the production of $Λ_c(2880)^+$ may reach up to about 20 $μ$b. About $10^7$ events from the reconstruction of $pD^0$ can be accumulated per day, if taking the designed luminosity ($2\times10^{32}~\mbox{cm}^{-2}\mbox{s}^{-1}$) of PANDA.

hep-ph↗

arXiv2014

Probing charmonium-like state $X(3915)$ through meson photoproduction

Inspired by the observation of charmonium-like state $X(3915)$, we explore the discovery potential of the $X(3915)$ production via meson photoproduction process. By investigating the $γp \to J/ψωp$ process including the $X(3915)$ signal and background contributions, we obtain the corresponding information of the cross section, the Dalitz plot and the $J/ψω$ invariant mass spectrum, which is helpful to further experimental study of $X(3915)$ via meson photoproduction.

hep-ph↗

arXiv2013

Charged charmoniumlike state $Z_c(3900)^\pm$ via meson photoproduction

In this work, we explore the production of the newly observed charged charmoniumlike state $Z_c(3900)^\pm$ by the photoproduction process $γp\to Z_c(3900)^+n$. Our numerical result indicates that the maximum of the calculated total cross section of $γp\to Z_c(3900)^+n$ can reach up to the order of $0.1 μb$. Furthermore, the Dalitz plot analysis is performed by considering the Pomeron exchange as the background contribution. This analysis shows that the $Z_c(3900)^+$ signal can be distinguished from the background easily and the best energy window of searching for $Z_c(3900)^+$ is $\sqrt{s}\simeq7$ GeV, which is important information for further experimental study of $Z_c(3900)^+$ by meson photoproduction.

hep-ph↗

arXiv2012

Revisiting the production of charmonium plus a light meson at PANDA

In this work, we calculate the total cross sections and the center-of-mass frame angular distributions of the charmonium production plus a light meson by the low energy $p\bar{p}$ interaction. The results of $p\bar{p}\to π^0 Ψ$ with and without form factor (FF) indicate that the FF contribution in the calculation cannot be ignored. The obtained cross section of $p\bar{p}\to π^0 J/ψ$ with FF can fit the E760 data well. We also predict the total cross sections and the center-of-mass frame angular distributions of $p\bar{p}\to ωΨ$, which show that these physical quantities are dependent on Pauli ($g_ω$) and Dirac ($κ_ω$) coupling constants of the $ppω$ interaction. Thus, $p\bar{p}\to ωΨ$ can be as the ideal channel to test the different theoretical values of $g_ω$ and $κ_ω$. Applying the formulae of $p\bar{p}\to π^0 Ψ$ and $p\bar{p}\to ωΨ$, we predict the total cross sections of the $p\bar{p}\to ηΨ$ and $p\bar{p}\to ρΨ$ reactions. Our results show a common behavior of the charmonium production with a light meson by the $p\bar{p}$ interaction, where the total cross section of the $η_c$ production is the largest one among all discussed processes. The above observations can be directly tested at the forthcoming $\bar{P}$ANDA experiment.

hep-ph↗