General intrinsic theory of general large $N_{c}$ QCD, SU(3) QCD, SU(2) hadron-dynamics and U(1) QED gauge field theories in general field theory and progress towards solving the nucleon spin crisis
This paper gives general intrinsic theory of general large $N_{c}$ QCD, SU(3) QCD, SU(2) hadron-dynamics and U(1) QED gauge field theories in general field theory and progress towards solving the nucleon spin crisis, i.e., presents general large $N_{c}$ QCD's inner structures, gauge invariant angular momenta and new corresponding Coulomb theorem in quark-gluon field interaction systems based on general field theory, and naturally deduces the gauge invariant spin and orbital angular momentum operators of quark and gauge fields with $SU(N_{c})$ gauge symmetry by Noether theorem in general field theory. In the general large $N_{c}$ QCD, we discover not only the general covariant transverse and parallel conditions ( namely, non-Abelian divergence and curl ), but also that this general system has good intrinsic symmetry characteristics. Specially, this paper's generally decomposing gauge potential theory presents a new technique, it should play a votal role in future physics research. Therefore, this paper breakthroughs the some huge difficulties in the nucleon spin crisis and opens a door of researching on lots of strong interacting systems with different symmetric properties, which is popularly interesting, and keeps both the gauge invariance and their angular momentum commutation relations so that their theories are consistent. Especially, the achieved results here can be utilized to calculate the general QCD strong interactions and to give the precise predictions that can be exactly measured by current particle physics experiments due to their gauge invariant properties etc.
应用重子电荷和能量动量的精确QCD求和规则,我们证明了如果核子是核波函数的唯一自由度,则核的结构函数将是在相同的Bjorken x = AQ^2/2(p_Aq)0.05处核子分布的加和< 0.5 up to very small Fermi motion corrections if x>.因此,EMC比与1的差异揭示了原子核中存在非核子自由度。利用精确的QCD求和定则,我们证明了实验研究中所用的比值R_A(x_p,Q_2),其中x_p = Q_2/2q_0m_p,即使在一个核只由小动量核子组成的情况下,也偏离1。与x_p图相比,使用Bjorken x图可使R_A(x,Q^2)进一步减小。核库仑场的洛伦兹变换明确地给出了等效光子对核部分子波函数光子分量的相干贡献。对于A~200,光子携带原子核光动量的~0.0065部分,这几乎补偿了数据分析在Bjorken x和x_p方面的差异。直接观测原子核中大的、主要是核子的短程关联,对x>0.6的EMC效应的大多数模型提出了严重的挑战。这些数据与强子EMC效应反映核子间相互作用的涨落的情形是一致的,这种涨落是由于相互作用核子中颜色分布的涨落引起的。这种情况的动态实现是这样的模型,其中x > 0.5的3q(3qg)组态与附近核子的相互作用较弱,导致抑制这种组态,从而给出正确的EMC效应。展望了未来的研究方向和挑战性问题。
Electroweak Reactions in the Non-Perturbative Regime of QCD
在这些讲座的第一部分,我认为手征微扰理论在存在的物质领域。它允许系统地计算出QCD的手征对称性破缺的后果。作为例子,阈值π光子和电生产和(自旋翻转)核子康普顿散射。第二部分讨论低能核子的夸克结构。讨论了各种电磁和弱形状因子。它示出如何宇称违反电子和(反)中微子散射的核子和核可以被用来作为一种工具,牵制奇怪的矩阵元素的质子。本文还讨论了QED、QCD和重夸克对这些过程的修正。(在第三十二届会议上发表的演讲。Internationale Universit{ä}tswochen f{ü}r Kern- und Teilchenphysik,Schladming,Austria,February 24- March 5,1993).
Radiative corrections to the nucleon isovector $g_V$ and $g_A$
Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所);University of Chinese Academy of Sciences(中国科学院大学);Hangzhou Institute for Advanced Study, UCAS(中国科学院大学杭州高等研究院);International Centre for Theoretical Physics Asia-Pacific(亚太理论物理中心)
Precision Sum Rule for Nucleon Isovector Polarizabilities and the Proton-Neutron Mass Difference
Institute of Theoretical Physics, Chinese Academy of Sciences(中国科学院理论物理研究所);School for Theoretical Physics, School of Physics and Electronics, Hunan University(湖南大学物理与电子学院理论物理学院);Hunan Provincial Key Laboratory of High-Energy Scale Physics and Applications, Hunan University(湖南大学高能标物理与应用湖南省重点实验室);School of Physical Sciences, University of Chinese Academy of Sciences(中国科学院大学物理科学学院);Southern Center for Nuclear-Science Theory (SCNT), Institute of Modern Physics, Chinese Academy of Sciences(中国科学院近代物理研究所南方核科学理论中心)