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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。我们在上述方面取得了各种研究成果：1.利用最大阿贝尔(MA)规范中的晶格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。这是描述夸克禁闭作为Higgs机制线索的一个重要结果。我们发现色单极子和瞬子之间有很强的相关性。我们推测瞬子不仅在手征对称性破缺中起着重要作用，而且在夸克禁闭中也起着重要作用。我们在斯普林8的GeV光子计划(LEPS)的激光设备和探测器系统的准备方面取得了很大进展。我们计划从1999年夏天开始进行数据采集。第一个实验将是通过将光子轰击核子来寻找胶球，即强相互作用的希格斯粒子。我们对光子与核子的碰撞现象进行了理论研究。我们的结论是，强相互作用希格斯粒子的探测是可能的。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，并在大藤宇宙实验室寻找暗物质。由于氡含量的降低，实现了良好的低本底测量。我们已经进行了(He，t)反应，得到了双β衰变和太阳中微子问题各个原子核的Gamov-Teller强度。我们相信，通过使用RCNP的环形回旋加速器、Spring8的GeV光子、Oto Cosmo实验室和Supercomutor，并以基础设施为核物理中心，我们已经在夸克-轻子核物理方面取得了重要成果。