Lattice QCD calculation of Hadronic matrix element with dynamical quark effects

具有动力夸克效应的强子矩阵元的格子QCD计算

• 批准号: 05640363
• 负责人: OKAWA Masanori
• 金额: $ 1.28万
• 依托单位: National Laboratory for High Energy Physics
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05640363/
• 关键词: Lattice QCD; Hadronic matrix elements

Lattice QCD calculation of phenomenologically important hadronic matrix elements such as the decay constants of pi, K,and B mesons and the B parameter of K meson have been made including the effect of dynamical quarks. Errors caused by finite lattice spacing and finite lattice size are systematically investigated. New numerical method to calculate general multi-correlation function is introduced and is successfully applied to calculate hadronic scattering length, eta'meson mass, pi-NUsigma term, and quark spin content within proton.

晶格QCD计算在现象学上重要的望子矩阵元件，例如Pi，K和B Meson的衰减常数以及K Meson的B参数，包括动态夸克的效果。由有限的晶格间距和有限晶格大小引起的错误已系统地研究。引入了计算一般多相关函数的新数值方法，并成功地应用于计算质子内质子内的散射长度，eta'meson质量，pi-nusigma项和夸克自旋含量。

项目成果

M.Fukugita, Y.Kuramashi, M.Okawa, A.Ukawa: "Scalar and axial vector matrix elements of proton in quenched QCD : Calculation of both connected and disconnected contributions" Nuclear Physics B (Proc.Suppl.). 42. 334-336 (1995)

M.Fukugita、Y.Kuramashi、M.Okawa、A.Ukawa：“淬灭 QCD 中质子的标量和轴向矢量矩阵元素：连接和断开贡献的计算”核物理 B（Proc.Suppl.）。

Y.Kuramashi, M.Fukugita, H.Mino, M.Okawa, A.Ukawa: "Topological susceptibiliy in lattice QCD with dynamical quarks" Physics Letter. B313. 425-429 (1993)

Y.Kuramashi、M.Fukugita、H.Mino、M.Okawa、A.Ukawa：“动态夸克晶格 QCD 中的拓扑磁化率”物理快报。

S.Aoki, M.Fukugita, S.Hashimoto, Y.Iwasaki, K.Kanaya, Y.Kuramashi, H.Mino, M.Okawa, A.Ukawa, T.Yoshie: "Analysis of hadron propagators with one thousand configurations on a 24^3*64 lattice at beta=6.0" Nuclear Physics B (Proc.Suppl.). (in press).

S.Aoki、M.Fukugita、S.Hashimoto、Y.Iwasaki、K.Kanaya、Y.Kuramashi、H.Mino、M.Okawa、A.Ukawa、T.Yoshie：“对具有一千种配置的强子传播器的分析

Y.Kuramashi: "Topological susceptibility in lattice QCD with dynamical quarks" Physics Letters B. 313. 425-429 (1993)

Y.Kuramashi：“动态夸克晶格 QCD 中的拓扑磁化率”《物理快报》B. 313. 425-429 (1993)

N.Ishizuka, M.Fukugita, H.Mino, M.Okawa, Y.Shizawa, A.Ukawa: "Viability of perturbative renormalization factors in lattice QCD calculation of the KAPPA_0-K^^-_0 mixing matrix" Physical Review Letters. 71. 24-26 (1993)

N.Ishizuka、M.Fukugita、H.Mino、M.Okawa、Y.Shizawa、A.Ukawa：“KAPPA_0-K^^-_0 混合矩阵的晶格 QCD 计算中微扰重正化因子的可行性”《物理评论快报》。