https://scholars.lib.ntu.edu.tw/handle/123456789/626747
標題: | Valence-Quark Distribution of the Kaon and Pion from Lattice QCD | 作者: | Huey-Wen Lin JIUNN-WEI CHEN Zhouyou Fan Jian-Hui Zhang Rui Zhang |
關鍵字: | NONPERTURBATIVE RENORMALIZATION; ANGULAR-DISTRIBUTIONS; High Energy Physics - Lattice; High Energy Physics - Lattice; High Energy Physics - Phenomenology; Nuclear Theory | 公開日期: | 31-三月-2020 | 出版社: | AMER PHYSICAL SOC | 卷: | 103 | 期: | 1 | 來源出版物: | Phys. Rev. D 103, 014516 (2021) | 摘要: | We present the first lattice-QCD calculation of the kaon valence-quark distribution functions using the large-momentum effective theory (LaMET) approach. The calculation is performed with multiple pion masses with the lightest one around 220 MeV, 2 lattice spacings $a=0.06$ and 0.12 fm, $(M_\pi)_\text{min} L \approx 5.5$, and high statistics ranging from 11,600 to 61,312 measurements. We also calculate the valence-quark distribution of pion and find it to be consistent with the FNAL E615 experimental results, and our ratio of the $u$ quark PDF in the kaon to that in the pion agrees with the CERN NA3 experiment. We also make predictions of the strange-quark distribution of the kaon. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/626747 | ISSN: | 2470-0010 | DOI: | 10.1103/PhysRevD.103.014516 |
顯示於: | 物理學系 |
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