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Quark-Lepton Nuclear Physics

夸克-轻子核物理

基本信息

批准号：
08304023
负责人：
TOKI Hiroshi
金额：
$ 3.78万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

项目摘要

The main purpose of Quark-Lepton Nuclear Physics is to understand the mechanism of quark confinement and to measure the neutrino mass.We have various research results in the direction of the above purpose :1. We have studied numerically the property of the non-abelian gluon using the lattice QCD in the maximal abelian (MA) gauge arid found that the non-abelian gluon aquires the mass of about 1GeV.It is an important result for the description of the quark confinement as clue to the Higgs mechanism.2. We have found a strong correlation between the color monopole and instanton. We conjecture that instanton plays an important role not only for chiral symmetry breaking but also on quark confinement.3. We have made a big progress in the preparation of the laser equipment and the detector system for the GeV photon project (LEPS) at SPring8. We plan to start data taking from the summer of 1999. The first experiment will be to search for the glueball, the Higgs partic1e of strong interaction, by bombarding the photon on nucleon.4. We have made theoretical studies on the phenomena of the collision of the photon with the nucleon. We have concluded that the detection of the Higgs particle of strong interaction would be possible. In addition, we have tried to find the methodto identify other processes.5. We have started to measure the double beta decay and to search for the dark matter in the Oto Cosmo Laboratory. We have achieved the circumstance of good low background measurement due to the reduction of the Radon content.6. We have made (He, t) reactions to get the Gamov-Teller strengths of various nuclei for double beta decay and the solar neutrino problem.We believe that we have achieved important results on Quark-Lepton Nuclear Physics by using the Ring Cyclotron of RCNP, GeV photon at SPring8, Oto Cosmo Laboratory and the Supercomutor and by using the infrastructure as the center of Nuclear Physics.

夸克-轻子核物理的主要目的是了解夸克禁闭的机制和测量中微子的质量，我们在上述方向上取得了多方面的研究成果：1。在最大阿贝尔（MA）规范下，我们利用格点QCD数值研究了非阿贝尔胶子的性质，发现非阿贝尔胶子的质量约为1GeV，这是作为Higgs机制线索的夸克禁闭描述的一个重要结果.我们已经发现了色介子和瞬子之间的强相关性。我们推测瞬子不仅在手征对称性破缺中起重要作用，而且在夸克禁闭中也起重要作用.我们在北京第八届脉冲科学大会上为GeV光子计划（LEPS）的激光设备和探测器系统的准备工作取得了重大进展。我们计划从1999年夏天开始收集数据。第一个实验将是通过光子轰击核子来寻找胶球，即强相互作用的希格斯粒子。我们对光子与核子碰撞的现象进行了理论研究。我们的结论是，强相互作用的希格斯粒子的检测是可能的。此外，我们还试图找到识别其他过程的方法.我们已经开始测量双β衰变，并在Oto Cosmo实验室寻找暗物质。由于氡含量的降低，实现了良好的低本底测量环境.我们利用RCNP的环形回旋加速器、SPring 8的GeV光子、Oto Cosmo实验室和超级计算机，利用这些基础设施作为核物理的中心，进行了（He，t）反应，得到了各种核的Gamov-Teller强度，并解决了太阳中微子问题。