arXiv subjects

Yin Huang

Publications and source records attributed to Yin Huang.

80 records · Page 5Linked to original sources

arXiv2017

A novel nuclear dependence of nucleon-nucleon short-range correlations

A linear correlation is found between the magnitude of nucleon-nucleon short-range correlations and the nuclear binding energy per nucleon with pairing energy removed. By using this relation, the strengths of nucleon-nucleon short-range correlations of some unmeasured nuclei are predicted. Discussions on nucleon-nucleon pairing energy and nucleon-nucleon short-range correlations are made. The found nuclear dependence of nucleon-nucleon short-range correlations may shed some lights on the short-range structure of nucleus.

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arXiv2016

Production of charmed baryon $Λ_c(2940)$ by kaon-induced reaction on a proton target

We investigate the possibility to study the charmed baryon $Λ_c(2940)$ by kaon-induced reaction on a proton target. By assuming the $Λ_c(2940)$ as a $pD^{*0}$ molecular state with spin-parity $J^{p}=1/2^{\pm}$, an effective Lagrangian approach was adopted to calculate the cross section, the $D^0p$ invariant mass spectrum and Dalitz plot of the $Λ(2940)$ production. The total cross section of the $K^{-}p\toΛ_c(2940)D_s^{-}$ reaction is found at an order of magnitude about 10 $μ$b. By considering the sub sequential decay $Λ_c(2940)\to{}D^0p$ with contributions from the $Λ_c(2286)$ and the $Σ_c(2455)$ as background, the $K^{-}p\to{}D_{s}^{-}D^{0}p$ reaction are studied. It is found that the $Λ_c(2940)$ is produced mainly at forward angles. The $Λ_c(2940)$ signal is predicted to be significant in the $D^0p$ invariant mass spectrum and the Dalitz plot of the $K^{-}p\to{}D_{s}^{-}D^{0}p$ reaction. The results suggest that it is promising to study the $Λ_c(2940)$ with high-energy kaon beam on a proton target in experiment.

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arXiv2016

Photoproduction of hidden-charm states in the $γp \to \bar{D}^{*0} Λ^+_c$ reaction near threshold

We report on a theoretical study of the hidden charm $N^*_{c \bar{c}}$ states in the $γp \to \bar{D}^{*0} Λ^+_c$ reaction near threshold within an effective Lagrangian approach. In addition to the contributions from the $s$-channel nucleon pole, the $t$-channel $D^0$ exchange, the $u$-channel $Λ^+_c$ exchange and the contact term, we study the contributions from the $N^*_{c \bar{c}}$ states with spin-parity $J^P = 1/2^-$ and $3/2^-$. The total and differential cross sections of the $γp \to \bar{D}^{*0} Lambda^+_c$ reaction are predicted. It is found that the contributions of these $N^*_{c \bar{c}}$ states give clear peak structures in the total cross sections. Thus, this reaction is another new platform to study the hidden-charm states. It is expected that our model calculation may be tested by the future experiments.

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arXiv2016

$\bar{K}$ -induced formation of the $f_2(1270)$ and $f_2^{'}(1525)$ resonances on proton targets

We investigate the productiong of $f_2(1270)$ and $f_2^{'}(1525)$ mesons in the $K^{-}p\toΛf_2(1270)$,$K^{-}p\toΛf^{'}_2(1525)$ and $K^{-}p\to{}K^{+}K^{-}Λ$ reactions within an effective Lagrangian approach. For $K^{-}p\to{}f_2Λ$ reaction, by considering the contributions from the $t$-channel $K^{+}$ exchange and $u$-channel nucleon pole, we get a fairly good description of the experimental measurements about the total and differential cross sections. Based on the studies of the $K^{-}p\to{}f_2Λ$ reaction, we investigate $K^{-}p\to{}K^{+}K^{-}Λ$ reaction including the contributions from the $f_2(1270)$ and $f'_2(1525)$ mesons decaying into $K^+K^-$ pair. The total cross sections and invariant mass distribution of the $K p \to K^+K^- Λ$ reaction are predicted. The results can be tested in future experiments and therefore offer new clues on the nature of these tensor states.

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arXiv2016

Pion-induced production of the $Z_c(3900)$ off a nuclear target

We investigate the possibility to study the charmoniumlike state $Z_c(3900)$ through the pion-induced production off a nuclear target. By using a high-energy pion beam, the $Z_c(3900)$ can be produced off a proton or nucleus though the Primakoff effect. The production amplitude is calculated in an effective Lagrangian approach combined with the vector dominance model. The total cross sections of the $p(π^-, Z^-_c(3900))$ and $p(π^-, Z^-_c(3900)\to J/ψπ^-)$ reactions are calculated, and their order of magnitude is about 0.1 and 0.01nb, respectively, with an assumption of branch ratio 10\% for the $Z_c(3900)$ decay in $J/ψπ$ channel. If the proton target is replaced by a nuclear target, the production of the $Z_c(3900)$ enhances obviously. The predicted total cross sections for the $A(π^-, Z^-_c(3900))$ and $A(π^-, Z^-_c(3900)\to J/ψπ^-)$ reactions with $A=^{12}$C or $^{208}$Pb are on the order of magnitude of 100 and 10 nb, respectively, which is about one thousand times larger than the cross sections off a proton target. Based on these the results, we suggest the experimental study of the $Z_c(3900)$ by using high-energy pion beams with a nuclear target at facilities such as COMPASS and J-PARC.

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arXiv2015

Theoretical investigation of the decay of the $N(2120)$ resonance to nucleon resonances near 1.7 GeV

Background: Until now the knowledge about nucleon resonances with a mass higher than 2 GeV has been scarce. Huge amounts of experimental data of the multipion photoproduction have been accumulated, and more can be expected in the future in facilities such as JLab 12 GeV. It makes it possible to investigate the decay of a nucleon resonance into another nucleon resonance. Purpose: The possibility to research the decay of the $N(2120)$ to nucleon resonances near 1.7 GeV in the three-pion photoproduction will be explored to provide useful information for future experimental study. Method: The pion and radiative decay amplitudes of nucleon resonances are studied within the constituent quark model, which is used to calculate the couplings constants, especially for the decay of a nucleon resonance near 2.1 GeV to another nucleon resonance near 1.7 GeV. The three-pion photoproduction off the neutron target, i.e.,$γn \toπ^{-}π^{-}Δ^{++}\to π^{-}π^{-}π^+ p$, is investigated based on the effective Lagrangian method with the coupling constant obtained form the decay amplitudes. Results: The resonance contribution with a state $N(^2P_M)\frac{3}{2}^{-}$ near 2.1 GeV decaying to a state $N(^4P_M)\frac{5}{2}^{-}$ near 1.7 GeV, i.\ e., $N(2120)\to N(1675)π$ is dominant in the process considered. The total cross section from the resonance contribution is at the order of 1 $μ$b and can be easily distinguished from the background. Conclusions: Our results suggest it is practicable to research the decay of the $N(2120)$ to the $N(1675)$ in experiment.

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arXiv2014

Discovery potential of hidden charm baryon resonances via photoproduction

In this work, we study the possibility to find $N^*_{c\bar{c}}$ and $Λ^*_{c\bar{c}}$ resonances with hidden charm with mass above 4 GeV in the photon-induced production. The cross sections for the photoproductions of hidden charmed baryons are predicted in the effective Lagrangian approach with the vector meson dominance mechanism. The $N^*(4412)$ can be produced directly by photon excitation with total cross section about 1 nb. The $N^*(4412)$ provides a obvious peak near threshold for $J/ψ$ photoproduction, which is promising to be checked by the future high precision experiment at JLab 12 GeV. The results will be helpful to the experimental search for the hidden-charmed baryon resonances in the coming experiment at JLab 12 GeV, such as SoLID, and the proposed electron-ion colliders at FAIR and HIAF.

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arXiv2013

The $γp \to n a^+_2(1320) \to n ρ^0 π^+$ reactions within an effective Lagrangian approach

We investigate the $a_2(1320)$ meson photon production in the $γp \to n a^+_2(1320)$ and $γp \to n ρ^0 π^+$ reactions within the effective Lagrangian method. For $γp \to n a^+_2(1320)$ reaction, by considering the contributions only from the $t-$channel $π^+$ exchange, we get a fairly good description of the current experimental total cross section data. We also studied the $γp \to n ρ^0 π^+$ reaction, which mainly contribute to the $γp \to n π^+ π^+ π^-$ reaction. The latter reaction has measured by the CLAS Collaboration. The total cross sections, invariant mass distribution, and the Dalitz Plot of $γp \to n ρ^0 π^+$ reaction are shown, which can be tested by future experiments.

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