Nuclear transparency of the charged hadron produced in the inclusive electronuclear reaction

高能$(e,e'p)$核透明中的核关联和有限作用程效应

Nuclear correlation and finite interaction-range effects in high-energy $(e,e'p)$ nuclear transparency

核透明性计算的高能量，半包容性的$(e,e'p)$反应，占所有阶的Glauber多重散射，并通过使用现实的有限范围$p N$相互作用和（动态和统计）相关的核波函数。由于$p N$有限程效应，核关联效应降低。净效应很小，并且敏感地依赖于有限核中的核关联的细节，而这些细节目前还知之甚少。

用关联Glauber波函数计算半包含A（e，e 'p）X过程的一种联簇展开法

A linked cluster expansion for the calculation of the semi-inclusive A(e,e'p)X processes using correlated Glauber wave functions

基于关联波函数和Glauber多重散射理论，在考虑末态相互作用的链团展开下，计算了半包容A（e，e 'p）X过程截面定义中的基本核量--畸变的单体混合密度矩阵.用真实的中心关联和非中心关联计算了16 O和40 Ca的核透明度，并说明了非中心关联所起的重要作用。

Absorption of $ω$ and $ϕ$ mesons in the inclusive photonuclear reaction

The $ω$ and $ϕ$ mesons dominantly decay outside the nucleus because the decay-lengths of them are much larger than the dimension of the nucleus. Therefore, the medium modification of the above mesons is studied through their absorption in the nucleus. CLAS collaboration at Jefferson Laboratory (Jlab) has investigated the absorption of the $ω$ and $ϕ$ mesons by measuring the nuclear transparency ratios for them in the $γA \to ω(ϕ) X \to e^+e^-X$ reaction. The nuclear transparency ratios for both $ω$ and $ϕ$ mesons in the above reactions have been calculated, and those are compared with the expe…

高能电子包容散射中的关联和有限作用程效应

Correlation and Finite Interaction-Range Effects in High-Energy Electron Inclusive Scattering

基于Glauber近似下的格林函数方法，我们用一种新的自洽公式计算了高能电子与核物质的包容散射截面，这是我们以前关于（e，e 'p）反应中核透明性的工作的推广.与其他方法的比较进行了讨论。在这个框架下，我们研究了末态相互作用中核子-核子相互作用的有限程效应，以及核的短程关联效应。我们提出了一个零程近似，当相关性和有限的相互作用范围的影响。它大大减少了数值工作，同时保持了合理的精度。

原子核中的Ω衰减

Omega attenuation in nuclei

我们研究包容性的欧米茄光生核，并提出了一种测量的核透明度比作为一种手段来了解介质中的欧米茄介子的属性。为此，我们使用的半经典耦合通道BUU运输的方法，允许一个一致的治疗所有的核效应。我们的计算条件的选择，例如，以匹配在ELSA或MAMI C现有的实验设施的设置。我们表明，观测值（总生产截面和透明度）确实是敏感的核介质中的ω N相互作用。

（p，2 p）散射中初态和终态相互作用的Glauber理论

Glauber theory of initial- and final-state interactions in (p,2p) scattering

我们开发的Glauber理论描述的初态和终态相互作用（IFSI）在准弹性A（p，2 p）散射。我们研究了包含和排除条件下的ISI失真效应。在包含反应中，重要的新效应是两组轨道之间的相互作用，这两组轨道进入包含（p，2 p）散射的IFS扭曲的单体密度矩阵的计算，并与初始和最终质子在旁观者核子上的非相干弹性再散射有关。我们表明，失踪的动量分布的IFSI扭曲是大的在整个范围内的失踪的动量包容性和排他性的反应，并影响在一个至关重要的方式解释的BNL数据（p，2 p）散射。计算结果表明，在缺少动量$p_{m}\lsim 100-150$ MeV/c的区域，非相干IFSI使核透明性提高了5- 10%.在$p_{m}\gsim 200$ MeV/c处，非相干的IFSI成为主导。

从细胞核和细胞核介质中光产生包含性$ω$的$ω$

Inclusive $ω$ photoproduction from nuclei and $ω$ in the nuclear medium

为了提取核介质中$ω$质量转移的信息，我们分析了在ELSA获得的数据，从那里获得了$ω$质量转移的证据。我们开发了一个蒙特卡罗模拟代码，考虑到可能的反应，在实验设置的$(γ~ A \to π^0 γ~X)$在附近的$ω$生产区域与随后的$ω\to π^0 γ$衰变。我们比较我们的结果与实验的分布$π^0 γ$不变的质量，并得出结论，该分布是兼容的一个扩大的$ω$宽度约90兆电子伏的核物质密度和质量没有变化。宽度的这种变化与从$ω$生产的A依赖性中的透明度比获得的初步结果是一致的。本结论与先前声称的$ω$质量转移证据的差异源于本文讨论的背景的不同选择。

Inclusive and Exclusive Scatterings from Tensor Polarized Deuteron

The possibility of using a tensor polarized deuteron target in electroproduction reactions creates new opportunities for studying different phenomena related to the short-range hadronic and nuclear physics. The use of tensor polarized deuteron allows to isolate smaller than average inter-nucleon distances for the bound two-nucleon system. In this report we consider several of high $Q^2$ reactions which are particularly sensitive to the short-range two-nucleon configurations in the deuteron. The one is the relativistic dynamics of electron-bound-nucleon scattering which can be studied in both i…

在高$Q^2\,(e,e'p)$反应中PDMATHAAA-相关性对质子核共振预测的影响

Effect of $NN$-correlations on predictions of nuclear transparencies for protons, knocked-out in high $Q^2\,(e,e'p)$ reactions

利用Nikolaev等人讨论的改进的理论输入，我们研究了在高能半包容性$(e,e'p)$反应中被敲除的核子的核的透明度$\cal T$。我们确定，忽略被敲除的核子和核心核子之间的$NN$相关性，使轻核的核透明度降低$\approx 15 \%$，重核的核透明度降低$\approx 10\%$。对于入射质子的横动量或纵动量积分的双折射，预测也是如此。强子动力学预测一个大致恒定的$\cal T$超过$Q^2\approx $ 2 GeV的$^2$，而对于所有的目标，最大的测量数据点$Q^2$ =6.7 GeV的$^2$似乎位于高原之上。这些数据点上的大误差条排除了关于颜色透明度开始的结论。

利用透射比测定核介质中 $D$ 介子宽度

On the determination of the $D$ meson width in the nuclear medium with the transparency ratio

该研究通过核透射方法计算不同核中 $D^+$ 产生截面相对于 $^{12}\ ext{C}$ 的比值，证明可由重核约 0.6 的显著偏离实验测定核介质中的 $D$ 介子宽度。

Quenching of high-pT hadrons: Energy Loss vs Color Transparency

High-pT hadrons produced in hard collisions and detected inclusively bear peculiar features: (i) they originate from jets whose initial virtuality and energy are of the same order; (ii) such jets are rare and have a very biased energy sharing among the particles, namely, the detected hadron carries the main fraction of the jet energy. The former feature leads to an extremely intensive gluon radiation and energy dissipation at the early stage of hadronization, either in vacuum or in a medium. As a result, a leading hadron must be produced on a short length scale. Evaluation within a model of pe…

Hadronization and Color Transparency

In this article we review our work on the production of hadrons in the nuclear environment. We work with a string-breaking model for the initial production of hadrons and with a quantum-kinetic transport model (GiBUU) to describe the final state interactions of the newly formed (pre)hadrons. The latter are determined both by the formation times and by the time-development of the hadron-hadron cross section. We first show that only a linear time-dependence is able to describe the available hadronization data. We then compare with detailed data from HERMES and JLAB; very good agreement is reache…

Onset of color transparency in holographic light-front QCD

The color transparency (CT) of a hadron, propagating with reduced absorption in a nucleus, is a fundamental property of QCD (quantum chromodynamics) reflecting its internal structure and effective size when it is produced at high transverse momentum, $Q$. CT has been confirmed in many experiments, such as semi-exclusive hard electroproduction, $e A \to e' πX$ for mesons produced at $Q^2 > 3 ~ {\rm GeV}^2$. However, a recent JLab (Jefferson Laboratory) measurement for a proton electroproduced in carbon $e\, {\rm C}\to e' p X$, where $X$ stands for the inclusive sum of all produced final states,…

中微子事件生成器中末态核子畸变、核透明度和核内级联模型之间的相互作用

Interplay between final-state nucleon distortion, nuclear transparency and intranuclear cascade models in neutrino event generators

本文概述了RDWIA在轻子-核散射中的应用，评估了核效应在初顶顶点与核内级联模型间的分配，并展示了核透明度与壳层依赖性的关联及其在INC中的实现。

核环境中的强子化和主导强子的电产生

Hadronization in Nuclear Environment and Electroproduction of Leading Hadrons

由电子深度非弹性散射引起的高虚夸克的辐射能量损失在领先强子的产生中起着至关重要的作用。胶子辐射的能量损失密度在包含强子产生中是依赖于时间和能量的。重要的现象包括Sudakov对能量守恒所禁止的那部分胶子谱的无辐射的抑制，以及对产生的无色波包的末态相互作用的抑制。我们也使用胶子辐射来模拟强子化的软部分，这通常被认为是由于色弦，并且很好地再现了弦参数。我们的无参数计算提供了一个很好的协议与现有的数据$z_h$依赖的夸克在真空中的碎裂函数，以及$ν$ -，$z_h$ -和$Q^2$ -依赖的核效应。我们得出的结论是，ELFE-HERMES的能量范围是最敏感的强子化的基础动力学，如果使用核目标。