High Energy Elementary Particle and Nuclear Reactions

基于粒子物理学中的量子色动力学标准模型和原子核中夸克-胶子的自由度，我们广泛地讨论了早期宇宙中的高能粒子反应和电子-位置湮灭反应。夸克-胶子等离子体[1,2]在高能核碰撞中，夸克-胶子与强子之间的相变实现了极高的高温密度态。我们研究了相变引起的动力学性质变化对强子质量的影响。此外，我们还通过模拟晶格规范场，从拓扑电荷分布、磁结构和费米子零模等方面讨论了非约束跃迁的性质。Skyrme模型及其相关主题[3,4,5]在非线性理论量化的框架下研究了Skyrme模型的结构。我们还成功地尝试了用集体坐标法对Skyrme模型进行扩展，使其包含奇异自由度。该方法揭示了重子-重子相互作用，并提供了合理描述NU LAMBDA和NU SIGMA势的rta或KAPPA交换部分的可能性。我们提出了一个夸克-双夸克级联模型，使我们能够连贯地理解介子和重子在破碎区的分布。我们还完成了从电子-正电子湮灭到核-核碰撞的多粒子动力学的全面综述。HERA的物理学[7,8]计算了HERA能量下0.01%至e^-p->e^- x的电磁辐射校正。讨论了超级伙伴产生过程e^-p->e^-qX, e^-p->e^-7 qX和e^-p-> γ nu qX，重点讨论了如何通过最小化来自各自背景的噪声来提取信号。

On the basis of the standard model on Quantum Chromodynamics (QCD) in particle physics and the quark-gluon degree of freedom in nuclei we extensively discussed high energy particle reactions including those in the early universe and electron-position annihilation reactions.1. Quark-gluon plasma [1,2] In high energy nuclear collisions a very high-temperature and -density state is realized and the phase transition between quark-gluon and hadron phases. We studied that how hadron masses are affected by a change of dynamical properties due to the phase transition. Furthermore, we discussed properties of the non-confinement transition through the topological charge distribution, magnetic structure and fermion zero-modes by simulating lattice gauge fields.2. Skyrme model and related topics [3,4,5] The structure of Skyrme model was investigated in the framework of the quantization of nonlinear theories. We also successfully attempted to extend the Skyrme model to include the strangeness degree of freedom by the collective coordinate method. This approach shed a light on the baryon-baryon interactions and gave a possibility to describe reasonably rta or KAPPA exchange part of NU LAMBDA and NU SIGMA potentials.3. Multiparticle production [6] We proposed a quark-diquark cascade model which enables us coherently to understand distributions of mesons and baryons in the fragmentation region. Also we completed a comprehensive review article on multiparticle dynamics from electron-positron annihilation to nucleus-nucleus collisions.4. Physics at HERA [7,8] The electromagnetic radiative corrections were calculated at the level of 0.01% to e^-p->e^-X at HERA energies. Superpartner production processes e^-p->e^-qX, e^-p->e^-7 qX and e^-p->gamma nu qX were discussed by putting emphasis on how to extract signals by minimizing noises coming from respective backgrounds.