Investigations in Elementary Particle Physics

9322114 Duncan将对量子场论和量子色动力学（QCD）以及电弱物理标准模型的具体方面进行一些理论研究。采用的方法将主要是非摄动的，包括晶格QCD中的蒙特卡罗模拟，摄动理论的解析改进和1/N展开。晶格计算将导致b介子系统中衰变常数和质量分裂的高精度第一性原理评估，这对b工厂中即将进行的b介子现象学研究至关重要。非摄动技术是解决强耦合场理论（如QCD）问题的关键。所攻击的问题代表了量子场论的基本问题，以及与当前和未来几代粒子加速器直接现象学相关的问题。＊＊＊

9322114 Duncan A number of theoretical investigations in Quantum Field Theory and specific aspects of Quantum Chromodynamics (QCD) and the Standard Model of Electroweak physics will be carried out. The methods employed will mostly be nonperturbative, including Monte Carlo simulations in lattice QCD, analytic improvement of perturbation theory, and 1/N expansions. The lattice calculations will lead to high-precision first-principle evaluations of decay constants and mass splittings in the B-meson system, of central importance for upcoming studies of B-meson phenomenology in B-factories. Nonperturbative techniques are essential for attacking problems in strongly-coupled field- theories such as QCD. The problems attacked represent fundamental issues of topical interest in Quantum Field Theory and matters of direct phenomenological relevance to current and future generations of particle accelerators. ***