质子和中子光生K介子的Regge加共振（RPR）模型是一个经济的单通道模型，参数很少。RPR模型不仅允许人们从数据中提取共振信息，而且具有预测能力。作为一个例子，我们表明，RPR模型作出公平的预测$p(e,e'K^{+})Λ$和$n(γ,K^{+})Σ^{-}$观测量从幅度优化的反应$p(γ, K ^{+})Λ$和$p(γ,K^{+})Σ^{0}$分别。
英文摘要：
The Regge-plus-resonance (RPR) framework for kaon photoproduction on the proton and the neutron is an economical single-channel model with very few parameters. Not only does the RPR model allow one to extract resonance information from the data, it has predictive power. As an example we show that the RPR model makes fair predictions for the $p(e,e'K^{+})Λ$ and the $n(γ,K^{+})Σ^{-}$ observables starting from amplitudes optimized for the reaction $p(γ, K ^{+})Λ$ and $p(γ,K^{+})Σ^{0}$ respectively.
Making use of the hybrid Regge-plus-resonance model, we investigate the process of kaon photoproduction off the proton target. We present a new model whose free parameters were adjusted to data in and above the resonance region and which provides an acceptable description of experimental data. The overwhelming majority of nucleon resonances selected in this analysis overlaps with those selected in our previous analyses and also with the Bayesian analysis with the Regge-plus-resonance model, which we deem to be dependable. A novel feature of our model consists in applying a different scheme for…
The $f_{1}(1420)$ productions via pion and kaon induced reactions on a proton target are investigated in an effective Lagrangian approach. Two treatments of the $t$-channel Born term, the Feynman model and the Regge model, are introduced to calculate the total and differential cross sections of the $π^{-}p\rightarrow f_{1}(1420)n$ and $K^{-}p\rightarrow f_{1}(1420)Λ$ reactions. The numerical results indicate that the experimental data of the total cross section of the $π^{-}p\rightarrow f_{1}(1420)n$ reaction can be reproduced in both the Feynman and the Regge models. Based on the parameters d…
In this work, we study the production of strange quarkoniums, the $ϕ(2170)$, also named $Y(2175)$, and the $η(2225)$, via a kaon induced reaction on a proton target in an effective Lagrangian approach. The total and differential cross sections of the reactions $K^{-}p\rightarrow ϕ(2170)Λ$ and $K^{-}p\rightarrow η(2225)Λ$ are calculated by the Reggeized $t $-channel Born term under an assumption that the $ϕ(2170)$ and $η(2225)$ are $Λ\barΛ$ molecular states. At the center of mass energies of about 4.2 GeV, the total cross section for the $ϕ(2170)$ production is predicted to be about 1 $μ$b. The…
本文计算了高能四体$p p \to p p K^{+} K^{-}$反应的微分分布，该反应构成了三体过程$p p \to p p M$的不可约背景，其中$M=ϕ$，$f_{2}(1275)$，$f_{0}(1500)$，$f_{2}'(1525)$，$χ_{c0}$ .我们认为，中央衍射的贡献介导的坡密子和Reggeon交换，以及全新的机制，从质子线的K介子发射。我们包括吸收效应由于质子-质子相互作用和K介子-K介子再散射。我们比较我们的结果与CERN ISR实验的横截面测量。我们预测未来的实验在RHIC，Tevatron和LHC。给出了不变的两K介子质量、K介子快度和K介子横动量的微分分布。$(y_{K^+}, y_{K^-})$中的二维分布特别有趣。入射能量越高，K介子的同半球发射越优先。我们发现直接从质子线发射的新机制产生的K介子是相当向前和向后的，但相应的截面相当小。这里考虑的过程构成了一个相当大的贡献，总的质子-质子横截面，以及K介子包容性横截面。本文研究质子-质子碰撞中通过$χ_{c0} \to K^{+}K^{-}$衰变产生纯量$χ_{c0}$介子的测量。在$k_{t}$ -因子分解方法中计算了排他性中心衍射$χ_{c0}$介子产生的相应振幅。讨论了运动学切割对信号背景比的影响。
